Group Show/Hide in dashboard 2.0

Thanks @E1cid that worked!

Indeed, if no page reference is provided, the console returns "page not found".

However, I couldn't find this explicitly mentioned in the node documentation. I initially understood that specifying a page was not mandatory, which led to some confusion.

This kind of issue seems unlikely to occur based on the Dashboard documentation, so thanks for sharing! I'll update the github issue with this info