Steps to reproduce:

1. Create fre-FR language.
2. Use the following Site Access config in .yamls:

           site:
               languages: [eng-GB]
           fre:
               languages: [fre-FR]
   

       system:
           admin_group:
               languages: [eng-GB]
               page_builder:
                   siteaccess_list: [site, fre]
   

1. Turn off alwaysAvailable flag in Landing Page Content Type.
2. Create Landing Page in eng-GB.
3. Translate this content into fre-FR.

Result:
One is presented with an empty screen. Preview action throws 500.

Expected result:
A preview should be rendered properly.

Stack trace:

1st:
Twig\Error\RuntimeError:
An exception has been thrown during the rendering of a template ("Could not find 'location' with identifier '127'").

at /var/www/ezplatform-kernel/eZ/Bundle/EzPublishCoreBundle/Resources/views/pagelayout.html.twig:11

2nd:
eZ\Publish\Core\Base\Exceptions\NotFoundException:
Could not find 'location' with identifier '127'

at /var/www/ezplatform-kernel/eZ/Publish/Core/Persistence/Legacy/Content/Location/Gateway/DoctrineDatabase.php:83
at eZ\Publish\Core\Persistence\Legacy\Content\Location\Gateway\DoctrineDatabase->getBasicNodeData()
(/var/www/ezplatform-kernel/eZ/Publish/Core/Persistence/Legacy/Content/Location/Gateway/ExceptionConversion.php:46)
at eZ\Publish\Core\Persistence\Legacy\Content\Location\Gateway\ExceptionConversion->getBasicNodeData()
(/var/www/ezplatform-kernel/eZ/Publish/Core/Persistence/Legacy/Content/TreeHandler.php:167)
at eZ\Publish\Core\Persistence\Legacy\Content\TreeHandler->loadLocation()
(/var/www/ezplatform-kernel/eZ/Publish/Core/Persistence/Legacy/Content/Location/Handler.php:105)
at eZ\Publish\Core\Persistence\Legacy\Content\Location\Handler->load()
(var/cache/dev/ContainerDC44qct/Handler_1aa5f2d.php:29)
at ContainerDC44qct\Handler_1aa5f2d->load()
(/var/www/ezplatform-kernel/eZ/Publish/Core/Persistence/Cache/LocationHandler.php:75)
at eZ\Publish\Core\Persistence\Cache\LocationHandler->eZ\Publish\Core\Persistence\Cache{closure}()
(/var/www/ezplatform-kernel/eZ/Publish/Core/Persistence/Cache/AbstractInMemoryHandler.php:100)
at eZ\Publish\Core\Persistence\Cache\AbstractInMemoryHandler->getCacheValue()
(/var/www/ezplatform-kernel/eZ/Publish/Core/Persistence/Cache/LocationHandler.php:82)
at eZ\Publish\Core\Persistence\Cache\LocationHandler->load()
(/var/www/ezplatform-kernel/eZ/Publish/Core/Repository/LocationService.php:191)
at eZ\Publish\Core\Repository\LocationService->loadLocation()
(var/cache/dev/ContainerDC44qct/LocationService_fd6e046.php:36)
at ContainerDC44qct\LocationService_fd6e046->loadLocation()
(/var/www/ezplatform-kernel/src/lib/Repository/Mapper/ContentLocationMapper/DecoratedLocationService.php:42)
at Ibexa\Core\Repository\Mapper\ContentLocationMapper\DecoratedLocationService->loadLocation()
(/var/www/ezplatform-kernel/eZ/Publish/SPI/Repository/Decorator/LocationServiceDecorator.php:42)
at eZ\Publish\SPI\Repository\Decorator\LocationServiceDecorator->loadLocation()
(/var/www/ezplatform-kernel/eZ/Publish/Core/Repository/SiteAccessAware/LocationService.php:58)
at eZ\Publish\Core\Repository\SiteAccessAware\LocationService->loadLocation()
(/var/www/ezplatform-kernel/eZ/Publish/Core/MVC/Symfony/Routing/UrlAliasRouter.php:317)
at eZ\Publish\Core\MVC\Symfony\Routing\UrlAliasRouter->generate()