As tittle says theres some issues with PyAlienlife and this mod , fix if poss?

data-final.fixes.lua

...
-- capsule stacks
for _, caps in pairs(data.raw["capsule"]) do
if caps.stackable then
caps.stack_size = new_size( caps.stack_size, my_stack_offset, my_stack_factor )
end
end

data-final.fixes.lua

...
-- capsule stacks
for _, caps in pairs(data.raw["capsule"]) do
if caps.stackable then
caps.stack_size = new_size( caps.stack_size, my_stack_offset, my_stack_factor )
end
end

That code is not working (outdated probably)
use this :

-- module stacks
for _, modu in pairs(data.raw["module"]) do
    if modu.flags ~= nil and has_value(modu.flags,"not-stackable") then
        modu.stack_size = 1
    end
end

P.S. Made a mod that does this: https://mods.factorio.com/mod/BigBagAEQuickFix

I've filed https://github.com/pyanodon/pybugreports/issues/1570 to get us un-conflicted from pymods now that the incompatibility is fixed.