Hello, are you asking if there is an error in the signature random number? What about error code 0? Random number signature error, error code 0 can be repaired with one key. Because when China Construction Bank paid online, the plug-in was successfully installed, but it still showed that the certificate signature was wrong. Refer to the prompt of code 0, and use the E-Road Escort Online Banking Security Detection Tool of China Construction Bank to repair it with one click. Therefore, there is an error in signing the random number, and the error code 0 can be fixed with one click.