I have widgets on my WordPress site and include some shortcodes for Font Awesome (not sure if this is relevant). When I update a widget and want to save it, I’m getting the following error:

There was an error. null is not an object (evaluating 'e.endpoints')

I tried several things, including WP Debug and disabling plugins one by one. Disabling “Enable Mastodon Apps” resolved the error, so I expect it might be caused by this plugin.

Hope you can resolve it. Please let me know how I can assist in finding the issue.