Running an aternos server with around 50 mods on it for myself and my cousins to play on. It has worked fine for everyone except for my one cousin who is encountering a problem with the create mod when she tries to launch the game. She is the only one experiencing this problem and although she managed to log into the server during one session, she has been unable to do so since.
crash-2021-06-29_13.07.23-fml.txt

Duplicate of #1799