MemoryStoreQueue:ReadAsync() Not Working

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1

Hello, I’ve been working on a queue system using MemoryStoreService with the following code:

--[[
 - @ Author: ZephyriaLysa
 - @ Create Time: 2025-11-27 21:21:56
 - @ Modified by: ZephyriaLysa
 - @ Modified time: 2025-11-28 00:07:34
 - @ Description: This is the main module for the queue system.
 ]]

--// Types
type queueData = { userId: number, gameType: string, timestamp: number }

--// Services
local MemoryStoreService = game:GetService("MemoryStoreService")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local ServerScriptService = game:GetService("ServerScriptService")

--// Modules
local Keys = require(ReplicatedStorage.Shared.Config.Keys)

--// Stores
local queueStore = MemoryStoreService:GetQueue("PlayerQueue")

--// Settings
local DEFAULT_GAME_TYPE = "FFA"
local EXPIRATION = 5

--// Module
local Queue = {}

--// Functions

-- Adds the player provided to the queue.
function Queue.AddToQueue(player: Player, gameType: string): boolean
    if typeof(player) ~= "Instance"
        or not player:IsA("Player")
    then
        warn("⚠️ | No player provided to add to the queue.")
        return false
    end

    if player:GetAttribute("InQueue") then
        warn("⚠️ | @" .. player.Name .. " is already in queue.")
        return false
    end

    gameType = if typeof(gameType) == "string" then gameType else "FFA"
    
    local data: queueData = {
        userId = player.UserId,
        gameType = gameType,
        timestamp = os.time(),
    }

    local success, err = pcall(function()
        queueStore:AddAsync(data, EXPIRATION)
    end)

    if success then
        print("✅ | Successfully added @" .. player.Name .. " to the queue, expiration: '" .. tostring(EXPIRATION) .. "'.")
        player:SetAttribute("InQueue", true)
        return true
    end

    print("❌ | Failed to add @" .. player.Name .. " to the queue: " .. err)
    return false
end

-- Checks if the player provided is in the queue.
function Queue.IsInQueue(player: Player?): boolean
    if typeof(player) ~= "Instance"
        or not player:IsA("Player")
    then
        warn("⚠️ | No player provided, can not check if they're in queue")
        return false
    end

    local success, data = pcall(function()
        return queueStore:ReadAsync(10)
    end)

    if not success then
        warn("⚠️ | Could not retrieve queue data: " .. data)
        return false
    end

    local playerFound = false

    for key, value: queueData in pairs(data) do
        if value.userId == player.UserId then
            playerFound = true
            break
        end
    end

    print("✅ | Checked if @" .. player.Name .. " is in the queue, returned '" .. tostring(playerFound) .. "'.")
    return playerFound
end

--// Module Exporting
return Queue

However, when I execute the function IsInQueue(player), it returns the following error after waiting for a long amount of time:

MemoryStoreService: InternalError: Internal Error. API: Queue.Read, Data Structure: UnknownMemoryStoreQueue.
2

“InternalError” Means it’s roblox’s issue, if it was the code’s problem it would not error due to the pcall. Nothing you or we can do