crashes after 1.16.100

so i was playing on a server and chatting when i tapped the button to exit the chat, and my game crashed, when i got back on the server it was fine and then a few minutes later it crashed when i went to enter chat. It also crashed earlier when i was hit by one of the mobs (a flying mob from an add-on which may or may not be the fault of the add-on for this specific crash but the other two shouldn't be)