Zotero Connector Version 5.0.125 Firefox not working

Hey,

I've tried to add items to my collection but the Zotero Connector doesn't seem to work after it updated itself. It is now running on version 5.0.125 in Firefox version 115.11.0esr (64-bit) on openSUSE 15.5. The icon in the toolbar only shows a grey website and doesn't respond to clicking it. Opening the add on preferences in Firefox shows an empty page. Updates for Firefox, Zotero itself (running on version 6.0.35) and restarting everything didn't resolve the problem.

Thank you for looking into it!
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