KingRoyale

Hi, I have owned a minecraft server for several years, just under 1 week I have had a problem with the Multiverse-Core plugin. Every time I start the server, my worlds are automatically unloaded, it had never happened to me in so many years of server, I wanted to understand if you could understand why I have this problem with the plugin. I tried to insert other plugins but they still don't work with spigot and bukkit, I don't know why, but here it would seem a plugin bug. In fact with this bug I can't even create a normal world anymore because it says "error, tryining create / load this world {WORLD}. Could you help me? Thanks a lot.