Fatal error: Uncaught Swift_RfcComplianceException: Address in mailbox given [] does not comply with RFC 2822, 3.6.2. in /home/deb113203/domains/theaterhetpeloton.nl/public_html/wp-content/themes/PelotonThema/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Headers/MailboxHeader.php:355 Stack trace: #0 /home/deb113203/domains/theaterhetpeloton.nl/public_html/wp-content/themes/PelotonThema/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Headers/MailboxHeader.php(272): Swift_Mime_Headers_MailboxHeader->assertValidAddress('') #1 /home/deb113203/domains/theaterhetpeloton.nl/public_html/wp-content/themes/PelotonThema/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Headers/MailboxHeader.php(117): Swift_Mime_Headers_MailboxHeader->normalizeMailboxes(Array) #2 /home/deb113203/domains/theaterhetpeloton.nl/public_html/wp-content/themes/PelotonThema/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Headers/MailboxHeader.php(74): Swift_Mime_Headers_MailboxHeader->setNameAddresses(Array) #3 /home/deb113203/domains in /home/deb113203/domains/theaterhetpeloton.nl/public_html/wp-content/themes/PelotonThema/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Headers/MailboxHeader.php on line 355