email preference center and unsubscibe link have localhost domian

[zero-one-devteam]

What type of report is this:

Q	A
Bug report?	Question/Bug
Feature request?
Enhancement?

Description:

When sending emails, the {unsubscribe_url} gets replaced by http://localhost/email/unsubscribe/5c9a004a9d4e7568890675

APP_URL ist set properly: host.mydomain.com

In local.php I see: 'site_url' => 'host.mydomain.com',

I did not find any reference to localhost. On a single host Mautic installation the url is correct, so I assume it's related to and AWS EB setting ...

If a bug:

Q	A
Mautic version	2.15.0
PHP version	7.2

Steps to reproduce:

1. Sending email through a real campaign (no test email)
2. Clicking on unsubscibe link
3. Manual replacing localhost with real hostname works

Log errors:

[zero-one-devteam]

Was a cache problem. After cleaning prod cache, the links are correct.