Perhaps something went wrong with the installation of Python.
Uninstall Python by going to Window → Plugin Manager → Modules and clicking Remove next to Python.
Verify that Python has been uninstalled completely by choosing Script → Open Scripts Folder and looking into the Repositories folder next to the Scripts folder. These should not be a folder named GlyphsPythonPlugin inside Repositories. If there is, manually delete it.
Go back to the Plugin Manager and install Python again. Wait for the installation to complete, then relaunch Glyphs. In the preferences, make sure the Python version ending in “(Glyphs)” is selected, otherwise select it and relaunch Glyphs again.
Thank you! I’ve followed all steps and this still doesn’t seem to resolve the issue. I have also tried using the ‘Clear’ button. When I click it, the code does not clear. So, something is not allowing it to run or clear. Any other suggestions would be helpful.