Crash equipping a spell gem

v0.8.3. I accidentally pressed S and E at the same time.


############################################################################################
FATAL ERROR in
action number 1
of Key Press Event for S-key Key
for object obj_equipspellgems:

trying to index a variable which is not an array
at gml_Object_obj_equipspellgems_KeyPress_83
############################################################################################

stack frame is
gml_Object_obj_equipspellgems_KeyPress_83 (line -1)

Thanks!