What to do if there are a lot of errors after updating unity?

Question

Unity

so I decided to update but the latest version of unity and launched the same project that was normal and working,

I see that it sins a lot on the trade plugin, went into the package and

yes, in the previous version of unity, when I upgraded to the latest version, there were also errors, so I set verify 2.0 .1 like or something nearby, there are no other versions right there ...

And now I'm thinking of installing the old version of unity or is it already rebuilding everything under the new one?
In principle, the last project that I did was already completed and I (most likely) will not get into it, however, what if I were working on some project now and would it be updated like this?
What do you advise?

Answer 1

The conflict is. Delete the plugin and leave only the Package.