Hello!

This could very well be a combination of mods at fault here, but the first line is referring to Ars Nouveau, so I am opening this issue here.

Ok, now onto the issue:
Minecraft: 1.20.1
Forge: 47.2.5
Ars: 4.7.4
Embeddium: 0.2.9
Embeddium++: 1.0.1
Oculus: 1.6.9 (but shaders were disables)
(full list of mods in the crash report, or in the 1.2 version of the modpack Gwacie's community)

Like the title says, using the dowsing rod on an Enchanting Apparatus fully surrounded by pedestals crashes the server, but not the client. This was happening on a dedicated server.

Here is the crash report:
https://gist.github.com/630R63/b38bf0a673e7d7f76dee113c9d15e168

Let me know if you need additional info :)