I see what you mean from the gimpscripts site. No spaces or accented characters. Your temporary file location is D:\Gimp work space\ and contains spaces which breaks Autotrace. All I can suggest is go into Edit -> Preferences -> Folders and change the location of the Temporary folder.
This a regular Win10 Gimp where the temporary folder is C:\Users\username\Appdata\Local\Temp\gimp No spaces there. I suggest keeping it simple. Try setting to C:\Users
Which Gimp are you actually using? Even installed for user only on D: there should still be a regular Gimp profile in C:
Is it a portable version of some sort installed on a removable drive?
Just for information, there is a Gimp 2.10.22 Windows installer just released. Mostly bug updates - no rush to update.
This a regular Win10 Gimp where the temporary folder is C:\Users\username\Appdata\Local\Temp\gimp No spaces there. I suggest keeping it simple. Try setting to C:\Users
Which Gimp are you actually using? Even installed for user only on D: there should still be a regular Gimp profile in C:
Is it a portable version of some sort installed on a removable drive?
Just for information, there is a Gimp 2.10.22 Windows installer just released. Mostly bug updates - no rush to update.