[HELP] attempt to call a table value (for iterator 'for iterator')

Hello, i get this error, trying find the fix but i give up, can somebody help? :smiley:

Code -

RegisterSecuredNetEvent(Events.reqSync, function()

local players = {}

for k,v in player do

    table.insert(players, {name = GetPlayerName(k), exp = v.exp, servID = k, ping = GetPlayerPing(k), crew = v.crew})

end

TriggerClientEvent(Events.getSync, source, players)

end)

For this line " for k,v in player do" getting error, whats wrong with it?

for k,v in pairs(player) do

Not;

for k,v in player do