Add latest version to maven-source-plugin
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
</plugin>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-source-plugin</artifactId>
+ <version>3.1.0</version>
+ </plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
