Fatal error: Uncaught Swift_TransportException: Connection could not be established with host 192.168.128.4 [Operation timed out #60] in /var/www/html/vendor/SwiftMail/classes/Swift/Transport/StreamBuffer.php:265 Stack trace: #0 /var/www/html/vendor/SwiftMail/classes/Swift/Transport/StreamBuffer.php(62): Swift_Transport_StreamBuffer->_establishSocketConnection() #1 /var/www/html/vendor/SwiftMail/classes/Swift/Transport/AbstractSmtpTransport.php(113): Swift_Transport_StreamBuffer->initialize(Array) #2 /var/www/html/vendor/SwiftMail/classes/Swift/Mailer.php(79): Swift_Transport_AbstractSmtpTransport->start() #3 /var/www/html/app/library/Mail/Mail.php(78): Swift_Mailer->send(Object(Swift_Message)) #4 /var/www/html/public/index.php(114): Karya\Mail\Mail->send(Array, 'KaryaWeb Error', 'error', Array) #5 {main} thrown in /var/www/html/vendor/SwiftMail/classes/Swift/Transport/StreamBuffer.php on line 265