Cannot edit script

I’ve installed the Scripting app, but the input area in the upper left corner keeps loading and I can’t input any script.

This happened after I ran the “Sync Airtable Base Structure” script provided by “miniExtensions”.

I’m a beginner, so I don’t know how to solve this problem.
If anyone knows how to solve this problem, please let me know.
Thank you very much for your help.