Failure to compile map4rdf

[zamycar]

I have been trying to install map4rdf for my research but I keep getting this error whenever I run "mvn clean install" to compile map4rdf. All solutions don't seem to work for me here. Below is the full description of the error. I am using Java jdk 1.7 and maven 3.6.0. Will appreciate any advice.

N.B. I am not an expert in programming or coding.

C:\Users\Carter\Desktop\map4rdf-master>mvn clean install
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------< es.upm.oeg.geolinkeddata:map4rdf >------------------
[INFO] Building Map4RDF 0.0.5-OL-SNAPSHOT
[INFO] --------------------------------[ war ]---------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ map4rdf ---
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ map4rdf ---
[INFO] Using 'ISO-8859-1' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory C:\Users\Carter\Desktop\map4rdf-master\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ map4rdf ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 279 source files to C:\Users\Carter\Desktop\map4rdf-master\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ map4rdf ---
[INFO] Using 'ISO-8859-1' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory C:\Users\Carter\Desktop\map4rdf-master\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ map4rdf ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ map4rdf ---
[INFO] No tests to run.
[INFO]
[INFO] --- gwt-maven-plugin:2.7.0:compile (default) @ map4rdf ---
[INFO] Compiling module es.upm.fi.dia.oeg.map4rdf.map4rdf
[INFO] Ignored 3 units with compilation errors in first pass.
[INFO] Compile with -strict or with -logLevel set to DEBUG or WARN to see all errors.
[INFO] Computing all possible rebind results for 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Rebinding net.customware.gwt.dispatch.client.standard.StandardDispatchService
[INFO] Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator
[INFO] Generating client proxy for remote service interface 'net.customware.gwt.dispatch.client.standard.StandardDispatchService'
[INFO] Analyzing 'net.customware.gwt.dispatch.client.standard.StandardDispatchService' for serializable types
[INFO] Analyzing methods:
[INFO] public abstract net.customware.gwt.dispatch.shared.Result execute(net.customware.gwt.dispatch.shared.Action action) throws net.customware.gwt.dispatch.shared.DispatchException [INFO] Return type: net.customware.gwt.dispatch.shared.Result [INFO] net.customware.gwt.dispatch.shared.Result [INFO] Verifying instantiability [INFO] es.upm.fi.dia.oeg.map4rdf.client.action.ListResult [INFO] Checking parameters of 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' [INFO] Checking type argument 0 of type 'es.upm.fi.dia.oeg.map4rdf.client.action.ListResult' because it is directly exposed in this type or in one of its subtypes [INFO] java.io.Serializable [INFO] Verifying instantiability [INFO] java.util.Arrays.ArrayList
[INFO] [WARN] Checking all subtypes of Object which qualify for serialization
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Verifying instantiability
[INFO] com.google.gwt.validation.client.impl.PathImpl
[INFO] Analyzing the fields of type 'com.google.gwt.validation.client.impl.PathImpl' that qualify for serialization
[INFO] [WARN] Field 'private final java.util.List<javax.validation.Path.Node> nodes' will not be serialized because it is final
[INFO] Compiling 15 permutations
[INFO] Compiling permutation 0...
[INFO] Process output
[INFO] Compiling
[INFO] Compiling permutation 1...
[INFO] Process output
[INFO] Compiling
[INFO] Compiling permutation 3...
[INFO] Process output
[INFO] Compiling
[INFO] Compiling permutation 2...
[INFO] Compiling permutation 4...
[INFO] Compiling
[INFO] Compiling permutation 5...
[INFO] Compiling
[INFO] Compiling permutation 6...
[INFO] Compiling
[INFO] Compiling permutation 7...
[INFO] Compiling permutation 8...
[INFO] Compiling
[INFO] Compiling permutation 9...
[INFO] Compiling
[INFO] Compiling permutation 10...
[INFO] Compiling
[INFO] Compiling permutation 11...
[INFO] Compiling permutation 12...
[INFO] Compiling
[INFO] Compiling permutation 13...
[INFO] Compiling
[INFO] Compiling permutation 14...
[INFO] Compile of permutations succeeded
[INFO] Compilation succeeded -- 170.216s
[INFO] Linking into C:\Users\Carter\Desktop\map4rdf-master\target\map4rdf-0.0.5-OL-SNAPSHOT\es.upm.fi.dia.oeg.map4rdf.map4rdf
[INFO] Invoking Linker Cross-Site-Iframe
[INFO] Ignoring the following script tags in the gwt.xml file
[INFO] http://s7.addthis.com/js/250/addthis_widget.js#pub=xa-4afb4ffc0b4064eb
[INFO]
[INFO] Link succeeded
[INFO] Linking succeeded -- 6.031s
[INFO]
[INFO] --- maven-war-plugin:2.3:war (default-war) @ map4rdf ---
Downloading from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-io/2.0.5/plexus-io-2.0.5.pom
Downloading from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-archiver/2.2/plexus-archiver-2.2.pom
Downloading from central: https://repo.maven.apache.org/maven2/com/thoughtworks/xstream/xstream/1.4.3/xstream-1.4.3.pom
Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/shared/maven-filtering/1.0-beta-2/maven-filtering-1.0-beta-2.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 03:43 min
[INFO] Finished at: 2019-04-23T20:06:16+03:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.3:war (default-war) on project map4rdf: Execution default-war of goal org.apache.maven.plugins:maven-war-plugin:2.3:war failed: Plugin org.apache.maven.plugins:maven-war-plugin:2.3 or one of its dependencies could not be resolved: Failed to collect dependencies at org.apache.maven.plugins:maven-war-plugin:jar:2.3 -> org.codehaus.plexus:plexus-io:jar:2.0.5: Failed to read artifact descriptor for org.codehaus.plexus:plexus-io:jar:2.0.5: Could not transfer artifact org.codehaus.plexus:plexus-io:pom:2.0.5 from/to central (https://repo.maven.apache.org/maven2): repo.maven.apache.org: Unknown host repo.maven.apache.org -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException

[Fransiro]

Hi, the problem is that you can not access to "https://repo.maven.apache.org/maven2" your DNS unknown the ip of this server: repo.maven.apache.org
If you have a firewall verify that you can access.
Put the URL "https://repo.maven.apache.org/maven2" in your browser if you can see it posible problem is your internet connection.