i dont know what this means...
Library\PackageCache\com.unity.2d.common@4.1.0\Runtime\InternalBridge\InternalEngineBridge.cs(21,35): error CS1061: 'SpriteRenderer' does not contain a definition for 'IsUsingDeformableBuffer' and no accessible extension method 'IsUsingDeformableBuffer' accepting a first argument of type 'SpriteRenderer' could be found (are you missing a using directive or an assembly reference?)