The error could be caused by Java missing, which can be fixed by installing jdk8-openjdk.If the error is not fixed by that or Java was properly installed in the first place, the wrong version could still be the default environment:
The error could be caused by Java missing, which can be fixed by installing jdk8-openjdk.If the error is not fixed by that or Java was properly installed in the first place, the wrong version could still be the default environment: