Sorry to hear that, it sounds like you will need to restore your forum from backup
I deployed NodeBB a few years back, took a break from non-social media, and have now come back, on the cusp of my deleting Facebook. Note that I am a senior web dev (php / MySQL) of 20+ years, so I am not a beginner web user. However, Node.js and Mongo are not my forte.
We've installed the latest version of NodeBB on forum.monsoon.city on an Ubuntu VPS. I no longer handle development - this was handled by a friend system admin, who doesn't support NodeBB.
For the most part, everything is working, but I've run into a few major issues that I can't seem to find. There is a problem with Categories and perhaps the db table.
I cannot create a new Category. It is staying maxxed at 4. See screenshot - I create the category, press Submit - but nothing ever happens. It doesn't create categories anywhere
I cannot create a post in an Category. When I submit the post, I receive the error: "Invalid Category ID" - see screenshot
thoughts / suggestions?
It sounds like your database is corrupted. I recommend reinstalling nodebb from scratch.