No group manifest in bundle.xml

[alvarogalia]

Error
El archivo zip sql-developer-keepalive-master.zip no contiene ningún manifiesto de grupo en META-INF/bundle.xml.
When trying to import .zip into SQL Developer 20.4.0.379

[Kianhit]

I meet the issue too.

[Jacob-Riddle]

If you download the zip file from Releases it will work.