Folgende Probleme sind bei einem Update von 9 -> 10 aufgetreten
Fehlermeldung
Symfony\Component\Mime\Message::setBody(): Argument #1 ($body) must be of type ?Symfony\Component\Mime\Part\AbstractPart, string given,
Lösung
Statt
$message = $this->objectManager->get('TYPO3\\CMS\\Core\\Mail\\MailMessage');
$message->setTo([$this->settings['to']])
->setFrom([$this->settings['from_email'] => $this->settings['from_name']])
->setSubject($this->settings['subject']);
$message->setBody('text/html', $emailBody);
die setBody wie folgt aufrufen:
$message = $this->objectManager->get('TYPO3\\CMS\\Core\\Mail\\MailMessage');
$message->setTo([$this->settings['to']])
->setFrom([$this->settings['from_email'] => $this->settings['from_name']])
->setSubject($this->settings['subject']);
$message->setBody()->html($emailBody);