MiklCraw4d

AH! You are a prince. That did the trick. Not sure why it decided to start breaking things out of the blue but that fixed it. Many thanks!

Yes, currently WP v. 5.9.3.
What version of PHP is optimal? Previously I think I was running 7.4 but I can check that with my provider, or upgrade if needed.

Just wondering if anyone else has ideas about this. I really need to be able to post; the last time I posted was August 2021 and the only thing that had changed on the site since then was automatic updates.

Ok thanks. SCRIPT_DEBUG did not work, so I looked at the developer console. These were the warnings it gave:

DevTools failed to load source map: Could not load content for https://progresscityusa.com/wp-includes/js/dist/stylis.mjs.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE

admin-bar-v2.js?ver=10.8-202217:3 Missing data from PHP (wpNotesArgs).

jquery-migrate.js?ver=3.3.2:100 JQMIGRATE: jQuery.fn.keyup() event shorthand is deprecated

jquery-migrate.js?ver=3.3.2:100 JQMIGRATE: jQuery.fn.click() event shorthand is deprecated

jquery-migrate.js?ver=3.3.2:100 JQMIGRATE: jQuery.fn.mouseenter() event shorthand is deprecated

jquery-migrate.js?ver=3.3.2:100 JQMIGRATE: jQuery.fn.mouseleave() event shorthand is deprecated

jquery-migrate.js?ver=3.3.2:100 JQMIGRATE: jQuery.fn.bind() is deprecated

DevTools failed to load source map: Could not load content for https://progresscityusa.com/wp-includes/js/dist/stylis.mjs.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE

Thanks – I did both of these as well and it did not help. Aside from Chrome, which is the browser I use, I also checked in Edge, which I had never used previously to access the site and had no plugins.