The error keeps showing
Notice: Undefined index: in /var/www/vhosts/wordpress/wp-content/plugins/external-login/login/db.php on line 98
Notice: Undefined property: WP_Error :: $ ID in /var/www/vhosts/wordpress/wp-includes/class-wp-user.php on line 171
Recoverable fatal error: Object of class WP_User could not be converted to string in /var/www/vhosts/wordpress/wp-includes/pomo/entry.php on line 91
