symfony rest api form errors

<?php

namespace ApiBundle\Controller;

use ApiBundle\Service\Authenticate;
use FOS\RestBundle\Controller\FOSRestController;
//use FOS\RestBundle\Controller\Annotations\RequestParam;
use FOS\RestBundle\Request\ParamFetcher;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\HttpFoundation\Request;
use TaskBundle\Entity\Project;
use TaskBundle\Entity\User;
use FOS\RestBundle\Controller\Annotations\RequestParam;

class ProjectController extends FOSRestController
{
    /**
     *
     * @RequestParam(name="firstname", description="foo")
     *
     * @return \Symfony\Component\HttpFoundation\Response
     */
    public function postProjectsAction(Request $request, ParamFetcher $paramFetcher)
    {
        $form = $this->createForm(\TaskBundle\Form\ProfileType::class, new User());

        $this->processForm($request, $paramFetcher, $form);

        if (!$form->isValid()) {
            $errors = $this->getErrorsFromForm($form);
            var_dump($errors);
            die;
        }

        $data = [
            'random' => random_int(1, 100000)
        ];

        $view = $this->view($data);

        return $this->handleView($view);
    }

    private function processForm(Request $request, ParamFetcher $paramFetcher, FormInterface $form)
    {
        $data = [];
        foreach ($paramFetcher->getParams() as $param) {
            $data[$param->getKey()] = $paramFetcher->get($param->getKey());
        }

        $clearMissing = $request->getMethod() != 'PATCH';
        $form->submit($data, $clearMissing);
    }

    private function getErrorsFromForm(FormInterface $form)
    {
        $errors = [];
        foreach ($form->getErrors() as $error) {
            $errors[] = $error->getMessage();
        }

        foreach ($form->all() as $childForm) {
            if ($childForm instanceof FormInterface) {
                if ($childErrors = $this->getErrorsFromForm($childForm)) {
                    $errors[$childForm->getName()] = $childErrors;
                }
            }
        }

        return $errors;
    }
}