GetUrl return

When I try

resp = getUrl(" https://crm.zoho.com/crm/private/json/Users/getUsers?authtoken=...&scope=crmapi&type=AllUsers");

pasted my authtoken instead dots I receive this information:

{"response":{"error":{"code":"4834","message":"Invalid Ticket Id"},"uri":"/crm/private/json/Users/getUsers"}}

What could be reason of this?