PastelStrawberry

So I installed forge and opened a test world to make sure the mods were installed correctly. When i boot up the world i get the error "The game crashed whilst exception in server tick loop Error: java.lang.NoSuchMethodError: 'void net.minecraft.server.level.DistanceManager.addRegionTicket(net.minecraft.server.level.TicketType, net.minecraft.world.level.ChunkPos, int, java.lang.Object, boolean)' Exit Code: -1" I have no idea what that means, but i desperately need help. The server I joined starts today and it has mods installed, any help would be appreciated