trying to make a form collection Warning: Invalid argument supplied for foreach() - forms

Question

I am making a form collection with the fos user register form. I overrided my register form and added the profile collection, its persisting the data in the database but whenever I load the page it shows this error more then 10 times.
Warning: Invalid argument supplied for foreach() in C:\xampp\htdocs\symfony-bootstrap\vendor\symfony\symfony\src\Symfony\Component\Validator\Mapping\Loader\AnnotationLoader.php on line 65
if i complete the form and send it, it does persist, but the view is a mess showing this error 10 times and i havent seen anyone with this error.
this is my registerformtype.
namespace sava\UserBundle\Form;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
class RegistroType extends AbstractType
{
/**
* #param FormBuilderInterface $builder
* #param array $options
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('perfil','sava_userbundle_tblperfil');
}
public function getParent()
{
return 'fos_user_registration';
}
public function getName()
{
return 'sava_user_registration';
}
}
this is how my webpage looks http://prntscr.com/5zess0.
validator code
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien#symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Validator\Mapping\Loader;
use Doctrine\Common\Annotations\Reader;
use Symfony\Component\Validator\Exception\MappingException;
use Symfony\Component\Validator\Mapping\ClassMetadata;
use Symfony\Component\Validator\Constraints\GroupSequence;
use Symfony\Component\Validator\Constraints\GroupSequenceProvider;
use Symfony\Component\Validator\Constraint;
class AnnotationLoader implements LoaderInterface
{
protected $reader;
public function __construct(Reader $reader)
{
$this->reader = $reader;
}
/**
* {#inheritdoc}
*/
public function loadClassMetadata(ClassMetadata $metadata)
{
$reflClass = $metadata->getReflectionClass();
$className = $reflClass->name;
$loaded = false;
foreach ($this->reader->getClassAnnotations($reflClass) as $constraint) {
if ($constraint instanceof GroupSequence) {
$metadata->setGroupSequence($constraint->groups);
} elseif ($constraint instanceof GroupSequenceProvider) {
$metadata->setGroupSequenceProvider(true);
} elseif ($constraint instanceof Constraint) {
$metadata->addConstraint($constraint);
}
$loaded = true;
}
foreach ($reflClass->getProperties() as $property) {
if ($property->getDeclaringClass()->name == $className) {
foreach ($this->reader->getPropertyAnnotations($property) as $constraint) {
if ($constraint instanceof Constraint) {
$metadata->addPropertyConstraint($property->name, $constraint);
}
$loaded = true;
}
}
}
foreach ($reflClass->getMethods() as $method) {
if ($method->getDeclaringClass()->name == $className) {
foreach ($this->reader->getMethodAnnotations($method) as $constraint) {
if ($constraint instanceof Constraint) {
if (preg_match('/^(get|is)(.+)$/i', $method->name, $matches)) {
$metadata->addGetterConstraint(lcfirst($matches[2]), $constraint);
} else {
throw new MappingException(sprintf('The constraint on "%s::%s" cannot be added. Constraints can only be added on methods beginning with "get" or "is".', $className, $method->name));
}
}
$loaded = true;
}
}
}
return $loaded;
}
}

Answer 1

if line 65 == foreach ($this->reader->getMethodAnnotations($method) as $constraint) ...
chceck $this->reader->getMethodAnnotations($method)
example
print_r('===><pre>');
print_r($this->reader->getMethodAnnotations($method));
print_r('</pre>');
I think, $this->reader->getMethodAnnotations($method) is not array

Answer 2

In symfony 5
run composer require doctrine/annotations it will fix the issue