Version of NTM 1.12.2-2.0.2
Version of Gregtech CEu 1.12.2-2.8.10-beta

The game crashes when Gregtech's pipes collide with NTM ones transporting fluid.
Steps to reproduce:

1. Place a source of fluid (in my case a pumpjack),
2. Connect the source to some kind of container (like an electric boiler),
3. Place even a single Gregtech pipe next to NTM ones,
4. Make fluid flow.
5. Observe the game crashing.

Crash report:

crash-2025-02-16_13.19.34-server.txt

mod conflict if i had to guess, i'm trying to replicate it but it's not crashing. [though it does stop fluid flow]
https://drive.google.com/file/d/1rz6Z2m3pQ5D4oDG0Ve_RQj2R6akhXKW6/view?usp=sharing

starting mc, just a sec so i can try to replicate it

yep, it crashed
error code: -1

I had tried to test it again and it just stopped fluid flow (as in your case). However, when I enabled extraction mode on Hbm's pipe, the game crashed.

sending the crash report to alcater

fixed indev