crash with py nature gass production
"Error while running event productions-per-minute:on_gui_opened (ID 102)
productions-per-minute/control.lua:733: bad argument #1 of 2 to 'ipairs'
(table expected, got nil)
stack traceback:
[C]: in function 'ipairs'
_productions-per-minute__/controllua:733:in function'get_mineable_resources'
_productions-per-minute__/controllua:651:in function'get_recipe_name_safe'
productions-per-minute/control.lua:315:in function'create_gui_list_ui'
productions-per-minute/control.lua:294:in function
'update_assembler_rate_gui'
productions-per-minute/control.lua:284:in function
'create_assembler_rate_gui'
productions-per-minute/control.lua:84:in function"
