Fatal error: Uncaught Error: Interface 'WPMailSMTP\Vendor\Psr\Cache\InvalidArgumentException' not found in /var/www/sweves.se/httpdocs/wp-content/plugins/wp-mail-smtp/vendor_prefixed/google/auth/src/Cache/InvalidArgumentException.php:21 Stack trace: #0 {main} thrown in /var/www/sweves.se/httpdocs/wp-content/plugins/wp-mail-smtp/vendor_prefixed/google/auth/src/Cache/InvalidArgumentException.php on line 21