Unable to install epubcheck sigil plugin v5.0.0
I have python and java installed (have checked in cmd prompt), have tried using both bundled and path python. I'm trying to install the .zip in Sigil version 1.9.20.
But Sigil keeps giving me the same message:
Error: Plugin not a valid Sigil plugin.
Is this a bug, or there something I am not doing?
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