Hi! So i just started a modded survival server with two friends, we started playing with a lot of mods and it all went well but then one of my friends started crashing, she was able to join again immediatly after though (by that i mean getting kicked and having the message "internal server error" pop up on her screen and also having the message "an existing connection was forcibly closed by the remote host" then we added 2 mods (on the already existing server), the backpack mod and the mr crayfish furniture mod. Things were going smoothly until she went to the nether for the second time. First time was fine, but second time she crashed and got an internal server error message. From there she hasn't been able to join again. It keeps saying "Mushii_ joined the game" "Mushii_ left the game" And she tried re-installing all mods on her laptop and turning off resource packs. (She also tried something with a firewall that i saw a post about) I have read a lot of threads and none of them seem to help. Unfortunately i can't understand what the log is trying to say. Also i should note me and my other friend has had no problem whatsoever with the server.
Sorry for the long message, heres the log: https://mclo.gs/5pSGitY