Reference: DarkPacks/SevTech-Ages#2356

Same thing happens on our server. Modpack SevTech Ages version 3.0.7

Complete server crash log: https://pastebin.com/bDsaJX9p

Crashes happen at irregular intervals. Sometimes you can play for hours before a crash happens. Other times there's several crashes in one hour. Always the same stacktrace. Crashes started to happen after we placed Celestial Gateways in the overworld and on the moon. Crashes happen seemingly at random, not even when something related to Astral Sorcery is done.