For the forum problem, can you edit your original post above with what you were trying to post? If not, you should cut it down to find out what specific character or whatever is breaking things. I can at least preview the contents of your post in a new thread without an error. I believe some/all emoji currently trigger an error, but there are no emoji in your pastebin link.

Actually, the error would be saving to the database, so you should do what I say above and try to edit your post with whatever you were trying to post, and then cut it down to find the offending character if necessary.

Thanks.

https://forums.zotero.org/discussion/123203/1645256881-zotero-connector-sh-reddit-com-json-failed-with-status-code-400 for the issue affecting Zotero Connector.

For the failures to post to the forum, I already spent around half an hour aiming to exclude problematic characters and/or markup. I might continue later.

Thanks, I'm curious, was it the ⋯ midline horizontal ellipsis (U+22EF), or something else?