Uncaught PHP Exception

Your software
My Mautic version is: 2.16
My PHP version is: 7.3

Your problem
My problem is: error from Mautic logs

These errors are showing in the log:

mautic.CRITICAL: Uncaught PHP Exception Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException: “You have requested a non-existent service “swiftmailer.mailer.transport.mail”.” at /home/wowdomains/domains/marketing.wowlookatthisweb.com/public_html/vendor/symfony/dependency-injection/Container.php line 286 {“exception”:"[object] (Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException(code: 0): You have requested a non-existent service “swiftmailer.mailer.transport.mail”. at /home/wowdomains/domains/marketing.wowlookatthisweb.com/public_html/vendor/symfony/dependency-injection/Container.php:286)"}

can you give a detailed overview of what you are trying to do ?

Well I have been just working on getting Mautic setup. I just looked at the error log to see what the problem was.

I am setting up with Amazon SES and SNS for bounces and complaints.

Haven’t noticed anything wrong but I also am not using it fully yet.

Okay, so it could possibly be nothing, just add your working email configurations and see if that fixes the issue.