cURL error 56: SSL read: error:00000000:lib(0):func(0):reason(0), errno 104 (see http://curl.haxx.se/libcurl/c/libcurl-errors.html) /home/ubuntu/workspace/notifications/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php:187 /home/ubuntu/workspace/notifications/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php:150 /home/ubuntu/workspace/notifications/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php:103 /home/ubuntu/workspace/notifications/vendor/guzzlehttp/guzzle/src/Handler/CurlHandler.php:43 /home/ubuntu/workspace/notifications/vendor/guzzlehttp/guzzle/src/Handler/Proxy.php:28 /home/ubuntu/workspace/notifications/vendor/guzzlehttp/guzzle/src/Handler/Proxy.php:51 /home/ubuntu/workspace/notifications/vendor/guzzlehttp/guzzle/src/PrepareBodyMiddleware.php:42 /home/ubuntu/workspace/notifications/vendor/guzzlehttp/guzzle/src/Middleware.php:30 /home/ubuntu/workspace/notifications/vendor/guzzlehttp/guzzle/src/RedirectMiddleware.php:68 /home/ubuntu/workspace/notifications/vendor/guzzlehttp/guzzle/src/Middleware.php:59 /home/ubuntu/workspace/notifications/vendor/guzzlehttp/guzzle/src/HandlerStack.php:67 /home/ubuntu/workspace/notifications/vendor/guzzlehttp/guzzle/src/Client.php:275 /home/ubuntu/workspace/notifications/vendor/guzzlehttp/guzzle/src/Client.php:123 /home/ubuntu/workspace/notifications/vendor/guzzlehttp/guzzle/src/Client.php:129 /home/ubuntu/workspace/notifications/vendor/keruald/mailgun/src/MailgunMessage.php:97 /home/ubuntu/workspace/notifications/vendor/keruald/mailgun/src/MailgunMessage.php:75 /home/ubuntu/workspace/notifications/vendor/keruald/mailgun/src/MailgunMessageFactory.php:83 /home/ubuntu/workspace/notifications/vendor/laravel/framework/src/Illuminate/Support/Facades/Facade.php:217 /home/ubuntu/workspace/notifications/app/Notifications/DockerHubNotification.php:105 /home/ubuntu/workspace/notifications/app/Notifications/DockerHubNotification.php:105 /home/ubuntu/workspace/notifications/app/Notifications/DockerHubNotification.php:94 /home/ubuntu/workspace/notifications/app/Notifications/DockerHubNotification.php:58 /home/ubuntu/workspace/notifications/app/Notifications/DockerHubNotification.php:41 /home/ubuntu/workspace/notifications/tests/Notifications/DockerHubNotificationTest.php:18 /home/ubuntu/workspace/notifications/tests/Notifications/DockerHubNotificationTest.php:39