Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources

Error during the built of the maven project. 

This is due to the existing .db file in the project. It should be clear first then only maven can build the project.

https://stackoverflow.com/questions/17223536/failed-to-execute-goal-org-apache-maven-pluginsmaven-compiler-plugin2-3-2comp