I could not execute the install-missing ant script.

Your System has a user PATH variable, which does not point to the maven installation binary directory

Just set a user variable PATH, wich points to the maven installation binary directory {maven-bin-installation-directory\bin}

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Sometimes maven does not work properly and cannot download arbitrary artifacts.

This may happen through network issues. Be insistent and try "mvn install" several times.

You will see the process will get each time a little bit further.

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