Email "" does not comply with addr-spec of RFC 2822

Also happens when the site name contains a comma. Quite a big bug this is. Emails not getting send this way, and causing troubles :-).

Also happens when the site name contains a comma

100% confirming this finding by @stefvanlooveren.

To reproduce with just 3 drush commands:

$ drush config:set system.site name 'foobar, test' -y

 // Do you want to update name key in system.site config?: yes.                                                         

$ drush user:block admin
 [success] Blocked user(s): admin

$ drush user:unblock admin
 [error]  Symfony\Component\Mime\Exception\RfcComplianceException: Email ""foobar" does not comply with addr-spec of RFC 2822. in Symfony\Component\Mime\Address->__construct() (line 56 of /home/vagrant/clima-opof-reference/vendor/symfony/mime/Address.php). 

In SqlContentEntityStorage.php line 815:
                                                               
  Email ""foobar" does not comply with addr-spec of RFC 2822.  
                                                               

In Address.php line 56:
                                                               
  Email ""foobar" does not comply with addr-spec of RFC 2822.  

🐛 Uncaught RfcComplianceException when email From name contains a comma Fixed was backported to 9.5 three days ago so it is not yet released. I am 99% sure this is a duplicate of it.

FYI,

this was weird, somehow when I went back to Configuration -> Basic Site Settings, System I did have simple site name "Drupal" but no FROM email address even though it had a red asterisk. I am also pretty sure I'd have changed site name from "Drupal"
So my test install somehow installed w/o setting up the Basic Site Settings, not sure how I did that.

After saving a required from email address my send mail issue went away it seems. So in my case I was missing basic site settings from email causing similar error.

hmm.

Thanks for the tip about a comma in the Site Name. Removing the comma fixed my issue.

I found this issue while looking for a solution to 🐛 Add Drupal 10 support, fix fatal error when sending email Needs review , and it looks like adding Symfony Mailer fixes it, allowing mail to be sent.

#20 works for me too. I have installed Symfony mailer and use that as formatter. Works perfectly.

Thanks!

Best,
Mariska