With the default Drupal configuration, email works fine. If I activate this module, when I try to send an email, I get this error :
Error : Call to undefined function Symfony\Component\Mailer\Transport\Smtp\Stream\proc_open() dans Symfony\Component\Mailer\Transport\Smtp\Stream\ProcessStream->initialize() (/home/clients/b8a9jhgjj78786b/sites/www.example.fr/vendor/symfony/mailer/Transport/Smtp/Stream/ProcessStream... ligne 41)
I left the default module configuration, how to fix. I don't understand the module documentation at all.
Fixed
1.1
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
I had the same problem.
Go to -> Configuration -> Mailer -> Transport (/admin/config/system/mailer/transport)
Add Transport type (Transport tab) -> SMTP
Fill in the required input fields -> Save
and after click -> edit -> Set as default
After this steps my drupal send mails via "Drupal Symfony Mailer" module