Me and my friend were playing on my 1.18.2 java modded server with only the tinkers construct mod (and the nessesary mods to go with it) and the Ars magica Legacy mod (and the nessesary mods to go with it) and my friend made and opened his arcane compendium and clicked on the air gradian boss section and then clicked on the ritual for it, and then clicked on the visualize button and now he keeps crashing immediately after joining. This is what comes up on my server console:

[00:07:35] [Server thread/INFO] [minecraft/PlayerList]: maddenkids[/8.9.89.102:14635] logged in with entity id 338 at (-3673.3505058067058, 65.09834062504456, 39.06610193907117)

Post debug log from server and client

How would I do that?

you can use https://gist.github.com/, you can simply drag and drop the file there