After upgrading the Rider Editor package to version 3.0.21 from 3.0.18, I get the following two compiler errors: "Library\PackageCache\com.unity.ide.rider@3.0.21 ...
However, unfortunately, there are no plans to backport to Unity 2020.1 or earlier... This package changes the C# compiler (csc) used on your Unity project, to support C# 8.0, C# 9.0 and more. Change ...
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