This problem has been bothering me for a long time. I really can’t help it.
When I add an extension, it makes an error as shown in the figure. The extension already appears in scripts, but cannot be used
I remember a similar issue in the past. The issue then seemed to be special characters in the file path, such as with the user name in-between \Users\ and \AppData\ in OP’s image above. Is that also the case with you?