we made sure the modlist had enough storage, as we could easily fit chipped in, but not rsinfinitybooster. and it works just fine in our modpack itself.

get the fullstack watchdog mod for your server from here https://www.curseforge.com/minecraft/mc-mods/fullstack-watchdog/files/4488549
Make the server crash by launching it with the rsinfinitybooster mod installed.
Then send the crash report file if there is no crash report then send the latest.log