https://www.curseforge.com/minecraft/mc-mods/architectury-fabric/files/3638626
I updated my server to v3.6.17 and am having repeated crashes. It worked fine when used client-only. I reverted to v.3.6.16 and the server booted just fine.

Please re-open with logs.

Do you have any logs for this crash? I don't seem to be able to reproduce this myself

I had the same issue, though my logs didn't provide anything useful I'm afraid, it's likely conflicting with something else.

For what it's worth I used the forge 3.6.17 version and it crashed.

We need the logs to do anything at the very least

I've resolved this on my end, was due to forge version the server was running.