The mod Py Functionnal caused a non-recoverable error.
Please report this error to the mod author.
Error while running event pyfunctionnal::on_built_entity (ID 6)
pyfunctionnal/control.lua:67: attempt to index field 'factories' (a nil value)
stack traceback:
pyfunctionnal/control.lua:67: in function 'construct_base_factory'
pyfunctionnal/control.lua:131: in function <pyfunctionnal/control.lua:130>