internal project id - type check
Created by: Troi
@blazekv reported error with type check:
{"error":{"code":500,"message":"Internal Server Error","exception":[{"message":"Type error: Return value of ProjectBundle\Entity\Project::getInternalId() must be of the type string, null returned","class":"Symfony\Component\Debug\Exception\FatalThrowableError","trace":
removed because php version doesn't allow nullables