Looping through a DataStore?

How would I go about doing this? I've tried :GetOrderedDatasStore() and I get error 503

This is the current code:

function Variables.RemoteFunctions.CheckSearch:OnServerInvoke(Player, Param)
    local Results = {}
    local Pages = game:service("DataStoreService"):GetOrderedDataStore("db_profiles"):GetSortedAsync(false, 0, 10000)
    for Index,Data in pairs(Pages:GetCurrentPage()) do
        if #Results < 8 then
            if Data.key:lower():sub(1,#Param) == Param:lower() then
                table.insert(Results, Data.key)
            end
        else
            break
        end
    end
    print(tostring(#Results))
    return Results
end