Hello, recently my server has been crashing whenever people join after a few minutes, and when nobody joins, it can run fine, but every hour outputs an error message in the console that reads as follows:
[Server] Netty Epoll Server IO #4/[INFO] Disconnecting VANILLA connection attempt: This server has mods that require Forge to be installed on the client. Contact your server admin for more details.
[Server] Netty Epoll Server IO #5/[ERROR] Channels [createaddition:main,cookingforblockheads:network,carryon:carryonpackets,fairylights:net,dreadsteel:main_channel,cfm:network,citadel:main_channel,storagedrawers:main_channel,iceandfire:main_channel,create_confectionery:create_confectionery,flywheel:network,curios:main,mysticalworld:main_network_channel,create:network,solcarrot:main,selene:network,cosmeticarmorreworked:main,paraglider:master,agricraft:network_channel,supplementaries:network,astralsorcery:net_channel,patchouli:main,caelus:main,infinitylib:network_channel,sereneseasons:main_channel,hats:channel,brewevolution:brewevolution] rejected vanilla connections
It looks like somebody on vanilla is trying to join, but it's just a small server with a couple friends so I know that there isnt anybody trying to join, and it outputs every hour on the hour