Fatal error: Uncaught exception 'Swift_RfcComplianceException' with message 'Address in mailbox given [] does not comply with RFC 2822, 3.6.2.' in /var/www/vhosts/kinderkostueme4kids.de/httpdocs/globals/swift/classes/Swift/Mime/Headers/MailboxHeader.php:352 Stack trace: #0 /var/www/vhosts/kinderkostueme4kids.de/httpdocs/globals/swift/classes/Swift/Mime/Headers/MailboxHeader.php(264): Swift_Mime_Headers_MailboxHeader->_assertValidAddress('') #1 /var/www/vhosts/kinderkostueme4kids.de/httpdocs/globals/swift/classes/Swift/Mime/Headers/MailboxHeader.php(108): Swift_Mime_Headers_MailboxHeader->normalizeMailboxes(Array) #2 /var/www/vhosts/kinderkostueme4kids.de/httpdocs/globals/swift/classes/Swift/Mime/Headers/MailboxHeader.php(65): Swift_Mime_Headers_MailboxHeader->setNameAddresses(Array) #3 /var/www/vhosts/kinderkostueme4kids.de/httpdocs/globals/swift/classes/Swift/Mime/SimpleHeaderFactory.php(60): Swift_Mime_Headers_MailboxHeader->setFieldBodyModel(Array) #4 /var/www/vhosts/kinderkostueme4kids.de/httpdocs/globals/swift/classe in /var/www/vhosts/kinderkostueme4kids.de/httpdocs/globals/swift/classes/Swift/Mime/Headers/MailboxHeader.php on line 352