[Help] Steam requests not working

So someone asked me to create a resource that checks for the players steam account age but every time I do a PerformHttpRequest to get the Steam Account Age it always returns a 400 status code.

The code for the resource will be below if someone could help.

fxmanifest.lua

fx_version 'cerulean'
games {'gta5'}

server_scripts {
    'config.lua',
    'server.lua',
}

config.lua

Config = {}
Config.Debug = true
Config.SteamAPIKey = ''
Config.AllowedAge = 91 --Days

server.lua

AddEventHandler('playerConnecting', function(name, setKickReason, deferrals)
    local src = source
    deferrals.defer()
    Citizen.Wait(0)
    deferrals.update('Checking for Steam...')

    local steamHex = string.gsub(GetPlayerIdentifier(src, 0), 'steam:', '')
    if not steamHex then
        deferrals.done('You MUST have Steam running to connect to this server!')
    end

    local steamID = tonumber(steamHex, 16)
    if not steamID then
        deferrals.done('You MUST have Steam running to connect to this server!')
    end

    Citizen.Wait(1500)

    local playerSteamAccountCreated = nil



    deferrals.update('Checking Steam Account Age...')

    PerformHttpRequest('http://api.steampowered.com/ISteamUser/GetPlayerSummaries/v0002/?key=' .. steamAPIKey .. '&steamids=' .. steamID, function(err, response, headers)
        if response then
            local accountInfo = json.decode(response)
            playerSteamAccountCreated = accountInfo['response']['players'][1]['timecreated']
        end
    end, 'GET', json.encode({}), { ['Content-Type'] = 'application/json' })

    Citizen.Wait(1500)





    deferrals.update('Verifying Steam Checks...')

    Citizen.Wait(1500)

    if playerSteamAccountCreated ~= nil and os.time() - playerSteamAccountCreated < Config.AllowedAge then
        deferrals.done('You have been denied access to this server for the following reason: Your Steam Account isn\'t within the threshold (must be ' .. Config.AllowedAge .. ' days old)')
    else
        deferrals.done()
    end
end)