FileNotFoundException: Resources/unity_builtin_extra does not exist

[ghost]

Hi i'm recieving this error on Unity version 2020.3.38f1

The full stack is

System.IO.File.Copy (System.String sourceFileName, System.String destFileName, System.Boolean overwrite) (at <695d1cc93cca45069c528c15c9fdd749>:0)
System.IO.File.Copy (System.String sourceFileName, System.String destFileName) (at <695d1cc93cca45069c528c15c9fdd749>:0)
Godot.Exporter.CopyAsset (UnityEngine.Object obj) (at Assets/Editor/Exporter/Exporter.cs:647)
Godot.Exporter.ConvertTexture (UnityEngine.Texture texture) (at Assets/Editor/Exporter/Exporter.cs:462)
Godot.Exporter.ConvertSpriteAsset (UnityEngine.Sprite sprite) (at Assets/Editor/Exporter/Exporter.cs:430)
Godot.Exporter.ConvertUnityAsset (UnityEngine.Object obj) (at Assets/Editor/Exporter/Exporter.cs:405)
Godot.Exporter.ExtractNodeBranch (UnityEngine.GameObject go) (at Assets/Editor/Exporter/Exporter.cs:156)
Godot.Exporter.ExtractNodeBranch (UnityEngine.GameObject go) (at Assets/Editor/Exporter/Exporter.cs:308)
Godot.Exporter.ConvertScene (UnityEngine.SceneManagement.Scene scene) (at Assets/Editor/Exporter/Exporter.cs:105)
Godot.Exporter.Export () (at Assets/Editor/Exporter/Exporter.cs:46)
Godot.Exporter.ExportToGodot31 () (at Assets/Editor/Exporter/Exporter.cs:16)

Do you know how i could fix this?
Cheers in advance ;D