1. Network connection problem: There may be problems with your network connection, such as network disconnection, weak signal or temporary connection failure. Please make sure that your network connection is normal and the signal is stable.
2. System maintenance or upgrade: Sometimes the security education platform may carry out system maintenance or upgrade, resulting in failure to log in normally. In this case, you can wait for the maintenance or upgrade to complete before trying to log in.
3. Platform failure: The safety education platform itself may face technical failure or server problems, resulting in failure to log in normally. At this point, you can try to log in later, or contact the platform technical support personnel for more help.