Good afternoon!
I have encountered a very rare bug in minecraft. I play minecraft with mods on version 1.20.1 (forge-1.20.1-47.2.0-installer). At first everything was as usual, I created a server, put there mods, start the server, go there, check the mods and exit. I did this process very many times to make sure it was working correctly. But at one point the server stopped starting, it began to give the following error (I will describe briefly):