Fatal error: Uncaught Swift_RfcComplianceException: Address in mailbox given [" email "] does not comply with RFC 2822, 3.6.2. in /var/www/vhosts/igb-service.de/httpdocs/php7x/includes/mailer/classes/Swift/Mime/Headers/MailboxHeader.php:348 Stack trace: #0 /var/www/vhosts/igb-service.de/httpdocs/php7x/includes/mailer/classes/Swift/Mime/Headers/MailboxHeader.php(263): Swift_Mime_Headers_MailboxHeader->_assertValidAddress('" email "') #1 /var/www/vhosts/igb-service.de/httpdocs/php7x/includes/mailer/classes/Swift/Mime/Headers/MailboxHeader.php(106): Swift_Mime_Headers_MailboxHeader->normalizeMailboxes(Array) #2 /var/www/vhosts/igb-service.de/httpdocs/php7x/includes/mailer/classes/Swift/Mime/Headers/MailboxHeader.php(63): Swift_Mime_Headers_MailboxHeader->setNameAddresses(Array) #3 /var/www/vhosts/igb-service.de/httpdocs/php7x/includes/mailer/classes/Swift/Mime/SimpleHeaderFactory.php(58): Swift_Mime_Headers_MailboxHeader->setFieldBodyModel(Array) #4 /var/www/vhosts/igb-service.de/httpdocs/php7x/includes/mailer/classe in /var/www/vhosts/igb-service.de/httpdocs/php7x/includes/mailer/classes/Swift/Mime/Headers/MailboxHeader.php on line 348