Sending data from Raspberry to server

I’ve a SIXFAB modem with a Hologram SIM. In my Raspberry I’m able to connect to internet with sudo pon. I’m non be able to send data with this code:
import subprocess
import requests

MyOut = subprocess.Popen([“sudo”, “pon”], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
stdout, stderr = MyOut.communicate()
userdata = {“sistema”:“acceso”}
resp =‘’, params=userdata, timeout=10)

I’ve got this error:
requests.exceptions.ConnectionError: HTTPConnectionPool(host=‘’, port=80): Max retries exceeded with url: /restapi.php?sistema=acceso (Caused by NewConnectionError(’<urllib3.connection.HTTPConnection object at 0xb654c3f0>: Failed to establish a new connection: [Errno -2] Name or service not known’,))

Thanks a lot

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