Hi, friend!
You check with this:
Error code description
When the client logs in through the WI (over the gateway), the response message after receiving the address ticket to the gateway fails.
Possible Causes
The network between the client and the gateway is abnormal.
Gateway exception.
Approach
Check whether there is an alarm for vag abnormality.
Check the network between the client and the gateway.
Try again later or replace a terminal for testing.
Hope this helps!