The error message "caching_sha2_password is not supported" suggests that the MySQL server does not support the 'caching_sha2_password' authentication method. This method is commonly used for authentication in MySQL, and is often used in combination with the MySQL Workbench. To fix this error, you will need to change the authentication method to a different one. MySQL does not currently support the 'caching_sha2_password' authentication method, but you can try using the following alternative methods:

1. The password authentication method: This method is the most widely supported authentication method in MySQL. It requires a password to be entered when connecting to the database. You can try connecting to the database using the password authentication method.
2. The mysql_native_password authentication method: This method is supported by some versions of MySQL. It requires a password to be entered when connecting to the database, but it does not support the caching_sha2_password authentication method. You can try connecting to the database using the mysql_native_password authentication method.
3. The kerberos authentication method: This method is supported by many systems, including Linux. It requires a username and password to be entered when connecting to the database, and it supports the caching_sha2_password authentication method. You can try connecting to the database using the kerberos authentication method.

I hope this helps! Let me know if you have any other questions.