Issue "Multiple plugins with the same name ‘name’ (found at ‘path_x’ and ‘path_x’). That means one or more plugins are set to be compatible with Editor. Only one plugin at the time can be used by Editor."

I ran into an error after updating the project from Unity 2019 to 2021. The following errors appeared in the project. Plugin X has the same name as plugin X. There are no duplicates in the project. The error is on both Windows and Mac. Tried to removed everything except Assets and Packages folder and regenerate, but issue still exists. Also, I tried few versions of Unity (2021.3.4, 2021.2.19, 2020.2.0).