Certain results from Botania's bottled mana can cause the server to crash due to a ticking entity error. Server and client are both on ATM3.3, with no custom mods or additions.

Reproduction steps: drink Mana in a Bottle until you get the "signal flare" result, which will cause an explosion sound, and disconnect the client, crashing the server and rolling back a couple minutes.

Crash log below.
https://pastebin.com/6jC72uJK

Thanks for the report. Looks like it's fixed on Botania's side and just needs to come down the pipeline in an update. Closing issue as "resolved" pending next pack update(s)