SQLSTATE[HY000] [1698] Access denied for user 'root'@'localhost'

This error message typically indicates that the MySQL server is unable to authenticate the user 'root'@'localhost' with the provided password.

There are a few possible causes for this error:

  1. The password for the 'root'@'localhost' user is incorrect.

  2. The 'root'@'localhost' user has been removed or its permissions have been revoked.

  3. The MySQL server is not configured to allow connections for the 'root'@'localhost' user.

To troubleshoot this issue, you can try the following steps:

  1. Check the password for the 'root'@'localhost' user to make sure it is correct.

  2. Check the permissions for the 'root'@'localhost' user to make sure it has the correct privileges.

  3. Check the MySQL server configuration to make sure it is allowing connections for the 'root'@'localhost' user.

  4. If you are unable to connect to the MySQL server at all, it may be that the server is not running or that there is a network issue preventing the client from connecting to the server.

If you are still unable to resolve the issue after trying these steps, it may be helpful to review the MySQL server log for additional information about the error.