Beam example fails to compile because of unused avro code in directory

[jtrtj]

within Beam/
executing :
mvn install -Dflink.version=1.13.2 -Dflink.version.minor=1.13

returns:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project basic-beam-app: Compilation failure: Compilation failure: 
[ERROR] /Users/jtrtj/workspace/kinesis_data_analytics_spike/amazon-kinesis-data-analytics-java-examples/Beam/src/main/java/samples/trading/avro/TradeEvent.java:[220,7] no suitable constructor found for SpecificRecordBuilderBase(org.apache.avro.Schema,org.apache.avro.specific.SpecificData)
[ERROR]     constructor org.apache.avro.specific.SpecificRecordBuilderBase.SpecificRecordBuilderBase(org.apache.avro.Schema) is not applicable
[ERROR]       (actual and formal argument lists differ in length)
[ERROR]     constructor org.apache.avro.specific.SpecificRecordBuilderBase.SpecificRecordBuilderBase(org.apache.avro.specific.SpecificRecordBuilderBase<samples.trading.avro.TradeEvent>) is not applicable
[ERROR]       (actual and formal argument lists differ in length)
[ERROR]     constructor org.apache.avro.specific.SpecificRecordBuilderBase.SpecificRecordBuilderBase(samples.trading.avro.TradeEvent) is not applicable
[ERROR]       (actual and formal argument lists differ in length)
[ERROR] /Users/jtrtj/workspace/kinesis_data_analytics_spike/amazon-kinesis-data-analytics-java-examples/Beam/src/main/java/samples/trading/avro/TradeEvent.java:[248,7] no suitable constructor found for SpecificRecordBuilderBase(org.apache.avro.Schema,org.apache.avro.specific.SpecificData)
[ERROR]     constructor org.apache.avro.specific.SpecificRecordBuilderBase.SpecificRecordBuilderBase(org.apache.avro.Schema) is not applicable
[ERROR]       (actual and formal argument lists differ in length)
[ERROR]     constructor org.apache.avro.specific.SpecificRecordBuilderBase.SpecificRecordBuilderBase(org.apache.avro.specific.SpecificRecordBuilderBase<samples.trading.avro.TradeEvent>) is not applicable
[ERROR]       (actual and formal argument lists differ in length)
[ERROR]     constructor org.apache.avro.specific.SpecificRecordBuilderBase.SpecificRecordBuilderBase(samples.trading.avro.TradeEvent) is not applicable
[ERROR]       (actual and formal argument lists differ in length)
[ERROR] /Users/jtrtj/workspace/kinesis_data_analytics_spike/amazon-kinesis-data-analytics-java-examples/Beam/src/main/java/samples/trading/avro/TradeEvent.java:[391,31] cannot find symbol
[ERROR]   symbol:   class AvroMissingFieldException
[ERROR]   location: package org.apache.avro
[ERROR] /Users/jtrtj/workspace/kinesis_data_analytics_spike/amazon-kinesis-data-analytics-java-examples/Beam/src/main/java/samples/trading/avro/TradeEvent.java:[417,3] method does not override or implement a method from a supertype
[ERROR] /Users/jtrtj/workspace/kinesis_data_analytics_spike/amazon-kinesis-data-analytics-java-examples/Beam/src/main/java/samples/trading/avro/TradeEvent.java:[419,3] method does not override or implement a method from a supertype
[ERROR] /Users/jtrtj/workspace/kinesis_data_analytics_spike/amazon-kinesis-data-analytics-java-examples/Beam/src/main/java/samples/trading/avro/TradeEvent.java:[430,3] method does not override or implement a method from a supertype
[ERROR] /Users/jtrtj/workspace/kinesis_data_analytics_spike/amazon-kinesis-data-analytics-java-examples/Beam/src/main/java/samples/trading/avro/TradeEvent.java:[433,51] cannot find symbol

This is due to the existence of unused java file in /Beam/src/main/java/samples/trading/avro/
After removing that directory and /Beam/src/main/resources/ I was able to successfully compile the example app.