Problem with Sketchfab plugin for Unreal Editor 4.22

Hi

First post on these forums. I’m currently having problems getting the latest Sketchfab plugin to work with Unreal Editor 4.22. As far as I understand, I have the folders/files in the right place. I’ve pasted the SketchfabUnrealPlugin folder and all its contents in the Plugins folder. Whenever I try to load Unreal up though, I get this warning:

UE4Editor_rra90GTunE