Running the code on different environments for a while now, I have never had any problems. Recently I installed the code onto a different server and I've been experiencing the following issue:
> Fatal error: Cannot access protected property DoctrineORMModule\Proxy_CG_\Page\Entity\PageRevision::$date in src/vendor/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php on line 2596
I am absolutely clueless, why this happens. It seems to be affecting only specific data rows, as you might reproduce here: http://de.serlo.org/pages
The field is defined as followed:
However, the exact same database snapshot works fine here: http://ptr.serlo.org/pages
Attached you will find a screenshot of the datarows. The yellow ones mark each one working and one not working row.
I have no idea what the problem is here.