placing a pipe connected to a powered pump with a Redstone signal the pipe was next to a water source block and as soon as the pipe was placed the game crashed any time the chunk is loaded the game crashes

Crashlog:

Initial crash:
https://pastebin.com/pDXcDY1C
Subsequent crashes:
https://pastebin.com/hDd6aD7E
https://pastebin.com/surfWeGm

Versions & Modlist

https://pastebin.com/xbAk1GdJ

This error is likely to be present in all versions (though I haven't tested yet).
The code in question does not account for an empty list of connected fluid handlers.
I'll look into this.