The mod Enemy Race Manager (1.20.0) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event enemyracemanager::on_script_trigger_effect (ID 155)
enemyracemanager/lib/helper/custom_attack_helper.lua:54: attempt to compare nil with number
stack traceback:
enemyracemanager/lib/helper/custom_attack_helper.lua:54: in function 'get_race_settings'
enemyracemanager/lib/helper/custom_attack_helper.lua:152: in function 'get_unit'
...myracemanager__/prototypes/base-units/custom_attacks.lua:28: in function 'process_constructor'
...anager__/controllers/on_script_trigger_effects_biter.lua:14: in function '?'
...anager__/controllers/on_script_trigger_effects_biter.lua:24: in function 'handler'
stdlib/stdlib/event/event.lua:342: in function 'pcall'
stdlib/stdlib/event/event.lua:362: in function 'dispatch_event'
stdlib/stdlib/event/event.lua:438: in function <stdlib/stdlib/event/event.lua:396>
