*Steps to reproduce:*

1. Turn off the Auto-save feature in User settings.
2. Add any language.
3. Try to translate any Landing Page content.

Result:
One is presented with an exception:

Attempted to call an undefined method named "resolveSiteAccessForLocation" of class "Ibexa\PageBuilder\Siteaccess\PageBuilderSiteAccessResolver".
Did you mean to call "getSiteaccessesForLocation"?

Expected result:
The landing page content should be translatable.