Wrong image url(domain) on emails

[ash-f]

For some reason, emails sent from Prestashop has a wrong url.
It's the old domain of dev site.
I can not find any old domain in the DB or the htaccess or the config file  I'm aware of.
Template variable is "mailThemesUrl."

i.e.
Wrong url on emails
https://dev.***.com//mails/themes/modern/assets/baseline-location_on-24px.png

The url should be like this.
https://www.***.com/mails/themes/modern/assets/baseline-location_on-24px.png

Strange thing is that when I preview emails in the backend, it has the correct domain.
The old domain appears only on sent messages.

Do you guys know how can I update it?

Prestashop version: 8.1.2

Edited October 24, 2023 by ash-f (see edit history)