So,I have been trying the last days to open my server. The server opens fine, but after I join it just crashes. I get a message: Server closed . My server is on forge 1.12 and I have installed the customnpcs mod
Here is the log of the server : https://mclo.gs/jLLEZ8F
I have tried restoring the world of a previous backup and it now does not crash. I just want to know what the problem here is, because I have made quite the progress between backups 