Plugins doesn’t work in Glyphs 3.1.2

All the plugins have been removed from the View, and reinstalling won’t solve the problem.

Which Python do you have selected in Glyphs > Settings > Addons > Python?

the Python drop down is not active.

Then open the Plugin Manager > Modules and install “Python”. Wait a bit until you restart the app.

Or do you also run Glyphs 3.2?

Solved! Many Thanks!
The Python was the issue.