Cannot build program with v3.0.3. Working with 2.16.7

[Paul6552]

After updating to version 3.0.3, I can no longer build my application.
I get the error message:

The packaging plugin for this project did not assign a main file to the project but it has attachments. Change packaging to 'pom'.

The pom.xml builds both. My webapp and my java application and builds one jar file. If I change the packaging to pom then I no longer get a jar file after the build. That's not correct either.

Unfortunately I don't know how to fix the error. Can anyone help me.
Thanks

Here is my pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"
         xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>at.tanzauswertung.portal</groupId>
        <artifactId>portal-parent</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <groupId>at.tanzauswertung.portal-backend</groupId>
    <artifactId>portal-backend</artifactId>

    <properties>
        <webapp.dependency.phase>prepare-package</webapp.dependency.phase>
        <surefire-plugin.version>3.1.0</surefire-plugin.version>
        <lombok.version>1.18.26</lombok.version>
        <testcontainers.version>1.17.6</testcontainers.version>
        <quarkus.version>3.0.3.Final</quarkus.version>
        <version.apache-poi>5.2.3</version.apache-poi>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>io.quarkus.platform</groupId>
                <artifactId>quarkus-bom</artifactId>
                <version>${quarkus.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>at.tanzauswertung.api</groupId>
            <artifactId>pea-portal-api</artifactId>
            <version>1.1-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>net.sf.jasperreports</groupId>
            <artifactId>jasperreports</artifactId>
            <version>6.20.5</version>
            <exclusions>
                <exclusion>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-core</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-databind</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-annotations</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.apache.lucene</groupId>
                    <artifactId>lucene-core</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>lucene-analyzers-common</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.apache.lucene</groupId>
                    <artifactId>lucene-queryparser</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.jfree</groupId>
                    <artifactId>jcommon</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.jfree</groupId>
                    <artifactId>jfreechart</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.eclipse.jdt.core.compiler</groupId>
                    <artifactId>ecj</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.codehaus.castor</groupId>
                    <artifactId>castor-xml</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.olap4j</groupId>
                    <artifactId>olap4j</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.google.zxing</groupId>
                    <artifactId>core</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.ibm.icu</groupId>
                    <artifactId>icu4j</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.testcontainers</groupId>
            <artifactId>junit-jupiter</artifactId>
            <version>${testcontainers.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.testcontainers</groupId>
            <artifactId>postgresql</artifactId>
            <version>${testcontainers.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.github.dasniko</groupId>
            <artifactId>testcontainers-keycloak</artifactId>
            <version>2.5.0</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombok.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>io.rest-assured</groupId>
            <artifactId>rest-assured</artifactId>
            <version>5.3.0</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>${version.apache-poi}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>${version.apache-poi}</version>
        </dependency>
        <!-- Glaube braucht man nicht mehr
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.12.0</version>
        </dependency>
        -->
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-arc</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-mailer</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-narayana-jta</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-hibernate-orm</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-hibernate-orm-panache</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-scheduler</artifactId>
        </dependency>
        <dependency>
            <groupId>org.hibernate.orm</groupId>
            <artifactId>hibernate-jpamodelgen</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-agroal</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-rest-client-reactive</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-rest-client-reactive-jackson</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-resteasy-reactive</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-resteasy-reactive-jackson</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-jdbc-postgresql</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-undertow</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-keycloak-admin-client-reactive</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-keycloak-authorization</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-oidc</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-flyway</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-junit5</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-test-h2</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-junit5-mockito</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>${surefire-plugin.version}</version>
                <configuration>
                    <skipTests>true</skipTests>
                    <systemProperties>
                        <java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
                    </systemProperties>
                </configuration>
            </plugin>
            <plugin>
                <groupId>io.quarkus</groupId>
                <artifactId>quarkus-maven-plugin</artifactId>
                <version>${quarkus.version}</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>build</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <version>3.3.1</version>
                <executions>
                    <execution>
                        <id>copy-resources</id>
                        <phase>validate</phase>
                        <goals>
                            <goal>copy-resources</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${project.build.directory}/classes/META-INF/resources/portal
                            </outputDirectory>
                            <resources>
                                <resource>
                                    <directory>${project.parent.basedir}/portal-webapp/build/</directory>
                                </resource>
                            </resources>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

    <profiles>
        <profile>
            <id>skipFrontendBuild</id>
            <properties>
                <surefire-plugin.version>${surefire-plugin.version}</surefire-plugin.version>
                <webapp.dependency.phase>none</webapp.dependency.phase>
            </properties>
        </profile>
    </profiles>

</project>