PDO::__construct() Unexpected server response while doing cache_sha2 auth 109

You might have faced this problem before. This is actually due to the new authentication way of mysql introduced in version 8.0.11.

Don’t be panic, solution is simple. Though I wasted few hours determining it :)

Solution: Log into mysql using terminal and run the following command:

ALTER USER root@localhost IDENTIFIED WITH caching_sha2_password BY 'password';

And

GRANT ALL PRIVILEGES ON {db}.* TO 'root'@'localhost';

Replace username, host, password and db accordingly.

Hope it saves your time.