Trying to send our newsletter this morning Mautic is showing that c. 3000 emails have been sent but they haven’t. There are still 3176 files in /tmp/spool/default (most of which have zero byte count) and when I try and run the following:
/usr/bin/php /var/www/mautic/app/console mautic:emails:send
I get the following error:
[Symfony\Component\Debug\Exception\ContextErrorException] Catchable Fatal Error: Argument 1 passed to Swift_Transport_AbstractSmtpTransport::send() must be an instance of Swift_Mime_Message, boolean given, called in /var/www/mautic/vendor/swiftmailer/swiftmailer/lib/classes/Swift/FileSpool.php on line 169 and defined
This is Mautic v2.12.1 and PHP v 5.6.32.
I’m not sure what to do next in order to resolve this. Any one had similar or have any idea?