I accidentally formatted the data directory containing all of the data for my Lemmy instance, and now when I try to remake the instance it works fine till I connect the domain to the server, where it proceeds to stop working. Looking at the logs I think it might be because all of the instances are trying to send their posts to a user which doesn't exist anymore, is there a way to fix this?
Create that user? I wiped mine early on once and just made sure to recreate the users i had. Only had 2.
Also look at the lemmy admin guide for a simple command to backup your db.