Was working perfectly, now cannot create new topic

I’d love to provide more details, but unfortunately I’ve only got the least helpful error message possible to work from:

There has been an error publishing this post to Discourse.

Nothing in any error logs I can see on either the site or Discourse.

I can link to an existing topic, but that’s little more help than updating post meta directly.

Is there a debug switch I missed in the settings? Or some other way to get a useful error message?

Hi @invisnet

Did you open your web dev console (in the browser) and check for errors in the JS console there?

Have now - nothing of note, certainly nothing about Discourse.