The mod Pyanodons Coal Processing (1.8.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event pycoalprocessing::on_gui_click (ID 1)
pycoalprocessing/scripts/wiki.lua:161: attempt to compare number with string
stack traceback:
pycoalprocessing/scripts/wiki.lua:161: in function 'handler'
stdlib/stdlib/event/event.lua:335: in function 'pcall'
stdlib/stdlib/event/event.lua:355: in function 'dispatch_event'
stdlib/stdlib/event/event.lua:438: in function <stdlib/stdlib/event/event.lua:389>

I also made an issue in github with a patch https://github.com/pyanodon/pycoalprocessing/issues/71

I'm not getting that error. Could you send in a save.

Fresh save, literally generated a map and that is it.

Weird ok. Ill take another stab at it see what I can sort out.

I disabled a big chunk of mods (mostly qol) and now it seems to work. The patch I posted on github did fix it even with the other mods though. I'll look around to see which mod causes this

Seems like https://mods.factorio.com/mod/PowerPlusPowerMeter this mod is quilty for the incompability. Removing it removes the content:

"blackhole-fuel-power-meter-usage-combinator",
"power-meter-usage-combinator",
"power-meter-usage-combinator-pyvoid",
"void-energy-pyvoid-fluid"

I can definitely live without that mod. The patch on github and how it fixes the problem do point towards a bug on PyCoals side but on the other hand the mod says that "the meter uses local hax to make the measurements"

Yeah, it adds a new fluid with smaller than 1000 fluid value to the game: https://github.com/daydev/FactorioPowerPlus/blob/master/Power%20Meter/prototypes/fluid.lua
This causes the comparison part to enter the elseif and crash.

There is a logical problem too, the insides of elseif can't never be reached since it will always hit the first one. If there is a fluid that is under the "1000" fuel_value limit, it will go to the elseif part and then fail.

I modded the data.lua and changed:
data.raw.fluid["heavy-oil"].fuel_value = "0.1KJ" -> crash
data.raw.fluid["heavy-oil"].fuel_value = "1000MJ" -> Works but 10000000KJ or something inside the wiki, not MJ like it should be.

I patched the scripts/wiki.lua like this so it also fixes the problem and formats the numbers correctly
if fluid_num < 1000 then
num = fluid_num .. "J"
elseif fluid_num >= 1000 and fluid_num < 100000 then
num = fluid_num/1000 .. 'KJ'
else
num = fluid_num/1000000 .. 'MJ'
end