1. Possible operational problems. You can restart your phone or computer.
2. There may not be enough memory to receive new information. Software can be used to clean up garbage and release memory.
3. The downloaded software may be damaged. The original software can be uninstalled, then downloaded and reinstalled.
Maybe the date or time is wrong. You can check the date and time to see if it is correct. If the date and time are incorrect, it will cause a network error.
Maybe there is something wrong with the software server, and it will take some time to recover.