Got this randomly while in orbit view fixing the output chest filter, took a minute before popping up. Let me know if you need anything else like a copy of the save.
Versions - Game: 2.0.55 - Mod: 0.2.9
Some Images - https://imgur.com/gallery/iinfo-BfcMnBa

Error below

Error while running event control-your-rods::on_tick (ID 0)
count must be positive
stack traceback:
[C]: in function 'insert'
control-your-rods/scripts/rods.lua:788: in function 'update_fuel_rod'
control-your-rods/control.lua:90: in function <control-your-rods/control.lua:56>

Edit

It seems to happen when a fuel rod burns out and gets changed to a new one.

II have the same problem and opened a different thread because yours was not immediately recognizable as the same one.

I "fixed" it by adding an extra condition to an "if" statement. It's not a proper fix, but at least the game doesn't crash. Currently it outputs a depleted fuel cell every other time, which is sub-optimal, but OK for now. May be I'll find a better fix. Check the other thread for details.

I dropped the mod from my kit, but glad you found a workaround.

Fixed in 0.2.10