__indexer: Argument 2 is an invalid type 'nil'; string expected

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ADE Debug:
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Name:		(null)
Name of:	(null)
Function type:	(null)
Defined on:	0
Upvalues:	0

Source:		(null)
Short source:
Current line:	0
- Function line:	0
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LUA Stack:
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1: Userdata [GameEvents]
2: NIL
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