#0 [internal function]: Symfony\Component\Mailer\Transport\Smtp\Stream\SocketStream->Symfony\Component\Mailer\Transport\Smtp\Stream\{closure}(2, 'stream_socket_c...', '/var/www/vhosts...', 157, Array)
#1 src/vendor/symfony/mailer/Transport/Smtp/Stream/SocketStream.php(157): stream_socket_client('ssl://email-smt...', 0, '', 60, 4, Resource id #143)
#2 src/vendor/symfony/mailer/Transport/Smtp/SmtpTransport.php(251): Symfony\Component\Mailer\Transport\Smtp\Stream\SocketStream->initialize()
#3 src/vendor/symfony/mailer/Transport/Smtp/SmtpTransport.php(194): Symfony\Component\Mailer\Transport\Smtp\SmtpTransport->start()
#4 src/vendor/symfony/mailer/Transport/AbstractTransport.php(72): Symfony\Component\Mailer\Transport\Smtp\SmtpTransport->doSend(Object(Symfony\Component\Mailer\SentMessage))
#5 src/vendor/symfony/mailer/Transport/Smtp/SmtpTransport.php(136): Symfony\Component\Mailer\Transport\AbstractTransport->send(Object(Symfony\Component\Mailer\SentMessage), Object(Symfony\Component\Mailer\DelayedEnvelope))
#6 src/XF/Mail/Mailer.php(304): Symfony\Component\Mailer\Transport\Smtp\SmtpTransport->send(Object(Symfony\Component\Mime\Email))
#7 src/XF/Mail/Mail.php(581): XF\Mail\Mailer->send(Object(Symfony\Component\Mime\Email), Object(Symfony\Component\Mailer\Transport\Smtp\EsmtpTransport))
#8 src/XF/Admin/Controller/Tools.php(288): XF\Mail\Mail->send(Object(Symfony\Component\Mailer\Transport\Smtp\EsmtpTransport), false)
#9 src/XF/Mvc/Dispatcher.php(352): XF\Admin\Controller\Tools->actionTestEmail(Object(XF\Mvc\ParameterBag))
#10 src/XF/Mvc/Dispatcher.php(259): XF\Mvc\Dispatcher->dispatchClass('XF:Tools', 'TestEmail', Object(XF\Mvc\RouteMatch), Object(XF\Admin\Controller\Tools), NULL)
#11 src/XF/Mvc/Dispatcher.php(115): XF\Mvc\Dispatcher->dispatchFromMatch(Object(XF\Mvc\RouteMatch), Object(XF\Admin\Controller\Tools), NULL)
#12 src/XF/Mvc/Dispatcher.php(57): XF\Mvc\Dispatcher->dispatchLoop(Object(XF\Mvc\RouteMatch))
#13 src/XF/App.php(2588): XF\Mvc\Dispatcher->run()
#14 src/XF.php(532): XF\App->run()
#15 admin.php(13): XF::runApp('XF\\Admin\\App')
#16 {main}