Can't see the preference center builder slots

Your software
My Mautic version is: 4.12
My PHP version is: 7.4 CGI
My Database type and version is: Mysql

Your problem
My problem is:
I am trying to create the unsubscribe landing page, checking the page as a preference center page.
When I edit the page in the Builder I cannot see any of the preference center builder slots, only the regular ones. No segment list, preferred channel, etc. options.

These errors are showing in the log: No errors in the log

Things that might have to do with the problem:
After changing the theme in the configuration panel, I don’t see different options in the landing page designs to select from, only Blank and Code Mode.

Thanks for your help.

I have the same issue hier, i hope you have found the solution.