“Unknown Name” pack crashes realm worlds when trying to join

It hasn’t happened until I added this Better Mob’s texture pack. This texture pack was uploaded recently on MCPEDL and it seems to work fine for everyone. I added the texture pack and now i cant join the realm. I checked the resource packs in the realm and 2 unknown files has appeared. I cant get rid of them as they just come back. It is just a texture pack, no behaviour packs.