Symfon form edit, child object, problem never passes line 32.

somethingController.php

<?php
/**
     * @Route("/{projectId<\d+>}", methods={"GET", "POST", "PUT"}, name="edit" )
     * @Entity("project", expr="repository.find(projectId)")
     * @Template
     *
     * @param string                 $projectId
     * @param EntityManagerInterface $em
     * @param Request                $request
     * @param ProjectHelper          $projectHelper
     *
     * @return array
     * @throws \Exception
     */
    public function edit(
        string $projectId,
        EntityManagerInterface $em,
        Request $request,
        ProjectHelper $projectHelper
    ) {
        $repo    = $em->getRepository('App:Project');

        $project = $repo->find($projectId);
        $object = $repo->getDataObject($project);

        $objectClassName =$this->_fqcnToShortCn($project->getObjectFqcn());
        $formTypeName = sprintf("App\Form\%sType", $objectClassName);


        $form = $this->createForm($formTypeName, $object);
        $form->handleRequest($request);
        if ($form->isSubmitted() && $form->isValid()) {
            $em->persist($object);
            $em->flush();
            $this->addFlash('success', 'Form saved!');
            return $this->formSubmitRedirect($form, $request, $project);
        }

        $templateLocation = 'project_forms/_form.'.$objectClassName.'.html.twig';
        if (!$this->get('twig')
                  ->getLoader()
                  ->exists($templateLocation)) {
            $templateLocation = 'project_forms/_form.html.twig';
        }


        $class = get_class($object);

        return [
            'form'         => $form->createView(),
            'formTemplate' => $templateLocation,
            'project'      => $project,
            'FormName'     => $class::NAME_STR." form",
            'navActive'    => 'Forms',
            'navData'      => $projectHelper->navData($project),
        ];
}