4 months ago I moved my project (was in version unity 2020.3.7f LTS) from my laptop to a hard disk and now I moved it to another laptop where I newly installed a newer version (unity 2020.3.25f LTS). So when I open my project, it says to enter safe mode. After clicking enter safe mode... It greets me with 20 errors. All the errors are related unity mathematics package. I checked almost everything and found no errors in the scripts. The errors are from these scripts: double3x3, float3x3, matrix. gen, uint3x3... But All errors have some text in common- error CSO246: The type or namespace name 'int3x3' could not be found (are you missing a using directive or an assembly reference?). I also went into the folder and checked the package, in file explorer it is normal and opens with no issues, but in unity editor it is not opening and it doesn't show any properties in the inspector window. I wish you understand my problem as I explained it in detail...
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