The identifier id is missing for a query of Concrete\Core\Entity\Express\Form

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Hello,

While editing a page on my website i somehow managed to blow up the "contact" page. It happened while i dragged some an express block onto it.


The message says:

Doctrine \ ORM \ ORMException
The identifier id is missing for a query of Concrete\Core\Entity\Express\Form


Does anyone know a solution? I would really appreciate it, otherwise i will revert to backup and lose the work i did today.