It was generated as a realm then downloaded and converted to a server, as far as I know, all the world generations settings were standard
unfortunately, I didn't have the presence of mind to fully backup the server before updating to 1.16
I've attached the crash reports and my current server.properties
after updating to 1.16.1 the server was stable for a while but unfortunately, the issue has returned and whenever I connect to the server I get the console spam them the server stops itself.
I've attached the crash reports below
[media][media]