The 1. server did not respond correctly to token authentication. Please read the user guide of the message interface. Go back and check that the configuration is correct.

2. The request URL has timed out. If the server is abroad or the speed of the server is not strong, it is usually enough to try several times. Usually, you need to consider replacing the server. Sign contains the meanings of "display", "signature", "symbol" and "sign", which can be translated according to specific contexts.