Not quite sure what happened or if this is fixed in later versions, we are running your mod on version 0.1.6

Log;

43291.529 Error MainLoop.cpp:1404: Exception at tick 36901549: The mod No Pipe Touching (0.1.6) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event no-pipe-touching::on_built_entity (ID 6)
Unknown entity name: plastic-pipe-npt[16]
stack traceback:
[C]: in function 'create_entity'
no-pipe-touching/control.lua:126: in function 'updateAdjacent'
no-pipe-touching/control.lua:170: in function <no-pipe-touching/control.lua:139>
43291.529 Error ServerMultiplayerManager.cpp:92: MultiplayerManager failed: "The mod No Pipe Touching (0.1.6) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event no-pipe-touching::on_built_entity (ID 6)
Unknown entity name: plastic-pipe-npt[16]
stack traceback:
[C]: in function 'create_entity'
no-pipe-touching/control.lua:126: in function 'updateAdjacent'
no-pipe-touching/control.lua:170: in function <no-pipe-touching/control.lua:139>"
43291.529 Info ServerMultiplayerManager.cpp:816: updateTick(36901549) changing state from(InGame) to(Failed)
43291.541 Quitting: multiplayer error.

43293.035 Info ServerMultiplayerManager.cpp:154: Quitting multiplayer connection.

image if you'd like to see what pipe caused the crash;
https://media.discordapp.net/attachments/737715425097285633/1214849425201954826/image.png?ex=65fa9bb1&is=65e826b1&hm=7cf89ff533b143c6db5338bb90fc3431d1e7755f9018ee1dcce0f93d238d4364&=&format=webp&quality=lossless&width=654&height=624

Let me know if this link doesnt work :)

Is that K2SE? It doesn't look familiar to me. Also, is it possible for me to get a save file?

The turbines are space exploration, heres the save, all mods are available from mods.factorio so should be able to just sync and load
https://drive.google.com/file/d/1sTjj0HiG3c7qxjDRtPOX7IlxzIyX6Id0/view?usp=sharing

Its only happened once so far and it was when placing pipes fast

Do you play when the game is paused by the editor?

It happened when playing normally, we rarely use editor, but its running as a dedicated server with auto pause. not sure if that helps :P

Try updating and recreating the scenario. It was most likely fixed in a later version