Possible Fixes

Yes

Modpack Version

other

What happened?

Trying to defeat the Summoner boss in the Blue Skies Everbright dimension. Fight plays entirely as it should, unless Summoner attempts to use Lightning attack, which instantly crashes the game when running on a server (attached crash log) and does the same in a single player game. Unsure how to progress mod at all, since I am not sure how to either remove that attack or beat him before it goes off

Crash Log

https://gist.github.com/NGHTFVRY/facf09542281783d1e78fc712df314d4