The mod Enemy Alert (1.0.1) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event enemy-alert::on_unit_group_finished_gathering (ID 152)
value for required field 'position' is missing
stack traceback:
[C]: in function 'create_entity' enemy-alert/control.lua:57: in function <enemy-alert/control.lua:48>