“AssertionError [ERR_ASSERTION]: ifError got unwanted exception: ER_NOT_SUPPORTED_AUTH_MODE: Client does not support authentication protocol requested by server; consider upgrading MySQL client” Code Answer
$ mysql -u root -p
Enter password: (enter your root password)
mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'your_new_password';
mysql> FLUSH PRIVILEGES;
mysql> quit