After importing an asset I got this error and it won't go away:
I click close and it just comes back.
Using Unity 2021.3.0f1 LTS and have Plastic SCM 11.0.16.6825 installed.
I imported an asset (Epic Toon FX) which had another unity package (ETFX 2019.4.24f1 URP Upgrade.unitypackage) which I doubled clicked on and imported. After that is when I got the error.