Yeah looks like mainPid is somehow missing you can check the admin>advanced>events log to see if someone deleted post 36210. Can also check if its still in the database by
We need better messaging, select a category first and it will work.
This is fixed, will be available in 1.7.1 https://github.com/NodeBB/NodeBB/issues/6073
If category is not selected entered tags just disappear
Great, thanks guys! we will try to update.
Yeah, this is totally not a new issue and has been posted about more than once in the past. Glad something was done.
The same problem comes with pasting in images. it uploads to the browser, then fails if there is no category selected first. Also been discussed before.