When is version 2019.3.15 and I try to go into a Collab project it says "unity package manager error" and it gives me the options to " retry, quit, or diagnose" how do I get past this?

please help as I’m trying to make a vr game.

When in version 2019.3.15 and I try to go into a Collab project it says “unity package manager error” and it gives me the options to " retry, quit, or diagnose" how do I get past this?

I meant to say “when in” I apologize for my incorrections.