SQLSTATE[HY000] [2002] Connection refusedSQLSTATE[HY000] [2002] Connection refusedSQLSTATE[HY000] [2002] Connection refused
Fatal error: Uncaught Error: Call to a member function prepare() on null in /var/www/pro/cryptoCurrency.php:27 Stack trace: #0 {main} thrown in /var/www/pro/cryptoCurrency.php on line 27