13 Jun 2022, 11:45

@peopleinside the issue was resolved by commenting out the code block in the function, assertValidAddress() located inside
vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Headers/MailboxHeader.php

I do not know if what I did is the right way to go about it but it works for me and I wish to share it with the group.

Here is the screenshot of the code block in the function that was commented out.
Error message.png