Couldn't convert value to json

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#1

Hello. While trying to put a list in memory, I got this error: Couldn’t convert value to json.
Script:

local Memory = game:GetService("MemoryStoreService")
local Teleport = game:GetService("TeleportService")
local MatchMaking = Memory:GetSortedMap("MatchMaking")
local MatchRosters = Memory:GetSortedMap("MatchRosters")
local Matchmakeremote = game.ServerStorage.MatchMake
--local Server  = Teleport:GetPlayerPlaceInstanceAsyc()
--local ServerID = Server[4]
--print(ServerID)
MatchMaking:SetAsync(10000000, 0, 86400)
MatchRosters:SetAsync(10000000, {}, 86400)
local function Matchmake(Player)
	local Matches = MatchMaking:GetRangeAsync(Enum.SortDirection.Ascending, 200)	
	local search = true
	local lowestvalue = 20
	for _, entry in ipairs(Matches) do
		if search then
			if entry.value < 20 then
				print(entry.key)
				print(entry.value)
				if entry.value < lowestvalue then
					lowestvalue = entry.value
					print(lowestvalue)
				end
				if entry.value == 0 then
					search = false
					local roster = MatchRosters:GetAsync(entry.key)
					roster[#roster + 1] = Player
					MatchRosters:SetAsync(10000000, roster, 86400)
					for index, value in pairs(roster) do
						print(value.Name)
					end
				end
			end
		end
	end
end
local function start()
	
end
Matchmakeremote.Event:Connect(Matchmake)
#2

Also tried:

local Memory = game:GetService("MemoryStoreService")
local Teleport = game:GetService("TeleportService")
local MatchMaking = Memory:GetSortedMap("MatchMaking")
local MatchRosters = Memory:GetSortedMap("MatchRosters")
local Matchmakeremote = game.ServerStorage.MatchMake
--local Server  = Teleport:GetPlayerPlaceInstanceAsyc()
--local ServerID = Server[4]
--print(ServerID)
MatchMaking:SetAsync(10000000, 0, 86400)
MatchRosters:SetAsync(10000000, {}, 86400)
local function Matchmake(Player)
	local Matches = MatchMaking:GetRangeAsync(Enum.SortDirection.Ascending, 200)	
	local search = true
	local lowestvalue = 20
	local key
	for _, entry in ipairs(Matches) do
		if search then
			if entry.value < 20 then
				print(entry.key)
				print(entry.value)
				if entry.value < lowestvalue then
					lowestvalue = entry.value
					key = entry.key
					print(lowestvalue)
				end
				if entry.value == 0 then
					search = false
					MatchRosters:UpdateAsync(entry.key, function (roster)
						roster[#roster + 1] = Player	
						return roster
					end, 86400)
					local roster = MatchRosters:GetAsync(entry.key)
					for index, value in pairs(roster.value) do
						print(value.Name)
					end
				end
			end
		end
	end
end
local function start()

end
Matchmakeremote.Event:Connect(Matchmake)

Exact error: Unable to convert value to json. - Server - MatchMaking:28

#3

Help please. I really need it! Help plz.

#4

Help pretty please! I really need it

#5

Set roster[#roster + 1] to Player.UserId instead of Player.

#6

No. Its supposed to be a table of players in a match

#7

Wait. Player is an instance while player.Id is a unchangeable value unique to that player. Thanks!

#8

The player instance is also unchangeable for any given player however you can only JSON encode primitive value types like numbers, strings, tables etc. A player instance and any instance for that matter cannot be encoded into a JSON format for it to be stored by the MemoryStoreService.