"Server list query returned an error: System.Threading.Tasks.TaskCanceledException: A task was canceled. <- System.TimeoutException: A task was canceled. <- System.Threading.Tasks.TaskCanceledException: The request was canceled due to the configured HttpClient.Timeout of 30 seconds elapsing."
This error is caused by the wrong port number in your server.cfg.
How To Fix:
In your server panel, copy or memorize the numbers after the colon ‘:’ in your server IP, for example: “XX.XX.XX.XX:2040”. Then, navigate to your server.cfg, at the very top of your config (excluding notes), there will be two lines back to back:
endpoint_add_tcp "0.0.0.0:30120"
endpoint_add_udp "0.0.0.0:30120"
Usually, the port number in these lines will be “30120” You will need to change that to the port number you got earlier from your server IP, for example:
endpoint_add_tcp "0.0.0.0:30120"
endpoint_add_udp "0.0.0.0:30120"
Becomes:
endpoint_add_tcp "0.0.0.0:2040"
endpoint_add_udp "0.0.0.0:2040"
This is just an example, and your port is most likely not 2040.