A creeper exploded in my base and caused my server to immediately crash, with subsequent restarts also crashing the server.

Not sure why this would crash the server, because I didn't even have any create diesel generators related items or blocks placed, and the fluid in the pipes was just lava.
I was only able to fix the server by disabling the mod, restarting the server, and then re-enabling the mod.

Crash logs attached:
crash-2024-04-22_09.07.30-server.txt
crash-2024-04-22_09.04.52-server.txt

The same thing happens to me. I am using the fabric port

This issue was recently fixed in Create: Diesel Generators [Fabric Restitched], a fork of the old Fabric port! The other Fabric port is no longer maintained, so I recommend switching over. Note that neither of the Fabric ports are maintained by the original author (as far as I know), so Fabric issues are probably not relevant to this repo.

https://github.com/mircey/create-diesel-generators-fabric-restitched
https://modrinth.com/mod/create-diesel-generators-fabric-restitched