Hello @opaque01
To fix this issue, you need to override the getUnsubscriptionLink() method in the Magento\Newsletter\Model\Queue class. You can do this by creating a new file called Queue.php in your Magento module. The following code will fix the issue:
<?php
namespace Vendor\Module\Model;
use Magento\Newsletter\Model\Queue;
class Queue extends Queue
{
public function getUnsubscriptionLink()
{
$subscriber = $this->getSubscriber();
if ($subscriber) {
$url = $this->getUrl('newsletter/subscriber/unsubscribe', ['id' => $subscriber->getId(), 'code' => $subscriber->getSubscriberCode()]);
return $url;
}
return null;
}
}
Once you have created this file, you need to register it with Magento. You can do this by adding the following line to your module.xml file:
<module name="Vendor_Module" setup_version="1.0.0">
<sequence>
<module name="Magento_Newsletter" />
</sequence>
<files>
<file name="Model/Queue.php" />
</files>
</module>
After you have registered the file, you need to clear the Magento cache. You can do this by running the following command in a terminal window:
php bin/magento cache:flush
Once you have cleared the cache, the unsubscribe link in your newsletter template should now work.
