Error when enabling extension "Corel Poly GUI"

When trying to enable extension Corel Poly GUI the error states “Could not create Java Implemetation Loader”
How do I get this extension to enable?

Under v4.2 there may now be little need for the CorePolyGUI extension. Refer the answer here.

Maybe Java is disable.

Menu/Tools/Options/LibreOffice/Advanced - Use Java runtime environment.

Yes. Sometimes it is apparently necessary to re-add the Java environment for LO to pick it up correctly. There are several other options in this thread. Windows x64 appears to have particular issues.