Fatal error: Uncaught mysqli_sql_exception: Host '172.19.0.2' is not allowed to connect to this MySQL server in /var/www/html/mysqli.php:3 Stack trace: #0 /var/www/html/mysqli.php(3): mysqli_connect('reacofertas.es', 'reacofertas', Object(SensitiveParameterValue), 'reacofertas') #1 /var/www/html/post.php(2): require_once('/var/www/html/m...') #2 {main} thrown in /var/www/html/mysqli.php on line 3