Fatal error: Uncaught exception 'MongoConnectionException' with message 'Failed to connect to: 51.81.106.134:3123: Connection refused' in /home/email_verification/includes/functions.php:51 Stack trace: #0 /home/email_verification/includes/functions.php(51): MongoClient->__construct('mongodb://email...', Array) #1 /home/email_verification/index.php(19): MongoConnectClosing('email_verificat...') #2 {main} thrown in /home/email_verification/includes/functions.php on line 51