'Invalid table key type used' on JSONEncode?

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#1

I have a Lua table:

local data = {
	[player.UserId] = {
		{
			['sheet'] = 'playerdata', ['type'] = 'return', ['dataname'] = 'Money'
		}
	}
}

and somehow when I try to encode it into JSON… it throws an error of Invalid table key type used.

#2

I couldn’t tell you precisely why this is the case, but it seems that this error gets fixed when you use a string for dictionary keys instead of integers. Try tostring(player.UserId)

#3

Hmm, that’s strange. I just tried to use JSONEncode on your table, and it worked fine?

Are you sure that the player variable is not nil?

#4

player is not nil since I’m getting it from PlayerAdded event.