Everytime I update your mod on my server I get entity errors and it crashes my server meaning I have to make a whole new world. like what the heck. this is frustrating I done so much in that world and your updates fail me

I was thinking I could just use /fml confirm to fix it but no forge doesnt have that command in 1.16.4 so theres no possable way to fix old blocks that are missing in the world. Theres an entity livingdeath event that fires off when something dies and the whole server crashes there is also a ton and I mean a ton of entities and blocks that are missing and I dont get why updating creates more of these missing blocks