Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /var/www/verena-ecker.de/wp-includes/wp-db.php:1570
Stack trace:
#0 /var/www/verena-ecker.de/wp-includes/wp-db.php(658): wpdb->db_connect()
#1 /var/www/verena-ecker.de/wp-includes/load.php(404): wpdb->__construct('verena', 'fulozihe', 'verena_wp', '172.18.0.4')
#2 /var/www/verena-ecker.de/wp-settings.php(107): require_wp_db()
#3 /var/www/verena-ecker.de/wp-config.php(121): require_once('/var/www/verena...')
#4 /var/www/verena-ecker.de/wp-load.php(37): require_once('/var/www/verena...')
#5 /var/www/verena-ecker.de/wp-blog-header.php(13): require_once('/var/www/verena...')
#6 /var/www/verena-ecker.de/index.php(17): require('/var/www/verena...')
#7 {main}
  thrown in /var/www/verena-ecker.de/wp-includes/wp-db.php on line 1570