Crash after defeating false god with enemy battle starting at same time

OS: WINE
Version: 0.20.2

Or, could be something else, there was a fade to black animation, then the game crashed.


############################################################################################
FATAL ERROR in
action number 1
of Create Event
for object obj_battlecontroller:

Variable obj_battlecontroller.xp(100149, -2147483648) not set before reading it.
at gml_Object_obj_battlecontroller_Create_0
############################################################################################

stack frame is
gml_Object_obj_battlecontroller_Create_0 (line -1)
called from - gml_Script_instance_create (line -1) -
gml_Room_battle_Create


Same thing with vulcanar eggs