Login token is invalid

Solution to invalid login token: 1. Check the validity period of the token. If the token has expired, you need to obtain a new token; 2. Check the signature of the token. If the signature is incorrect, you need to obtain a new token; 3. Check The correctness of the key. If the key is incorrect, you need to obtain a new token; 4. Use the HTTPS protocol to transmit the token. It is recommended to use the HTTPS protocol for transmission; 5. Use two-factor authentication. Two-factor authentication can improve the security of the account. sex.