Today 10th July 2022 I was told an APSO update was available. I decided to go ahead with it but now APSO seems to have removed itself from my LibreOffice. I tried reinstalling it from the Extensions manager but an error occurs...
I've tried with a few other APSO's (diff. versions but still it won't install, e.g I download apso-v2 51.3 Kb, but that error appears. So now I have no APSO. I even reinstalled the latest version of LO 7.4.3.2 (Can anyone help me fix this situation? Thanks.
As reported in your comment, the first thing to do when trying to fix an extension is to reset the LibreOffice user profile directory, or at least remove the part where the extension is installed.
https://wiki.documentfoundation.org/UserProfile#Manual_procedure_.28all_versions.29
Removing the whole profile will require you to redo all your settings, but personally, I find that it's often good to have a fresh start anyway.