TextMeshPro Update to version 1.5.1

Library\PackageCache\com.unity.textmeshpro@1.5.1\Scripts\Editor\TMPro_FontAssetCreatorWindow.cs(11,19): error CS0234: The type or namespace name ‘TextCore’ does not exist in the namespace ‘UnityEditor’ (are you missing an assembly reference?)

Get this error meesage , with Unity2018.4.2f1

Im using Unity 2020.1

Were you able to solve this, i cant compile because im getting the same errors.

My God, why is TextmeshPro always messed up past several years, its always such a HUGE problem all the time. Im stuck now becuase of it cant release my app to Play store. Im wondering if they even compile it before releasing it.

https://discussions.unity.com/t/803936

Unity 2021.3.15f1, and I’m still getting that error, ha