Add missing build plugin version
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
+ <version>3.8.1</version>
<configuration>
<source>8</source>
<target>8</target>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
+ <version>3.2.0</version>
<configuration>
<excludes>
<exclude>java/**</exclude>
