Pressed E to fast when entering/using spell selection screen


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FATAL ERROR in
action number 1
of Key Press Event for E-key Key
for object obj_battlespellbook:

Variable obj_battlespellbook.s(100099, -2147483648) not set before reading it.
at gml_Object_obj_battlespellbook_KeyPress_69
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I possibly opened and selected a blank spell list in battle by pressing E too quickly(one frame apart?)

2.3.2
Win 10