Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.6.0:exec (default-cli) on project Osa02_13.PositiivistenLukujenKeskiarvo: Command execution failed. Process exited with an error: 1 (Exit value: 1) -> [Help 1]
To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.
Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.6.0:exec (default-cli) on project Osa02_13.PositiivistenLukujenKeskiarvo: Command execution failed. Process exited with an error: 1 (Exit value: 1) -> [Help 1]
To see the full stack trace of the errors, re-run Maven with the -e switch. Re-run Maven using the -X switch to enable full debug logging.
For more information about the errors and possible solutions, please read the following articles: [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException