可捕获的致命错误：传递给\\ Entity \\ Image :: setFile（）的参数1必须是Symfony \\ Component \\ HttpFoundation \\ File \\ UploadedFile的实例，

Question

I Got this error

Catchable Fatal Error: Argument 1 passed to swaam\\ImageUploaderBundle\\Entity\\Image::setFile() must be an instance of Symfony\\Component\\HttpFoundation\\File\\UploadedFile,

instance of swaam\\ImageUploaderBundle\\Entity\\Image given, called in D:\\xamp\\htdocs\\shams\\vendor\\symfony\\symfony\\src\\Symfony\\Component\\PropertyAccess\\PropertyAccessor.php on line 438 and defined in D:\\xamp\\htdocs\\shams\\src\\swaam\\ImageUploaderBundle\\Entity\\Image.php line 166

according to the mention line no 166 its the function setFile() here is my function

 public function setFile(UploadedFile $file = null)
{
    $this->file = $file;
    // check if we have an old image path
    if (isset($this->path)) {
        // store the old name to delete after the update
        $this->temp = $this->path;
        $this->path = null;
    } else {
        $this->path = 'initial';
    }
}

I couldn't even understand the error , any one please help me and explain a bit the reason of the error plus the possible solution.

Answer 1

I've got a similar error message. I solved it by adding <form method="post" {{ form_enctype(form) }}> to my form tag.

Answer 2

I got this error when using choice field type in a form for a field that represented an entity.

To fix this I changed choice to entity in buildForm and also added class that this entity is supposed to resolve to to options, so add statement started to look as following:

public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder->add(
                  'product', 
                  'entity', 
                  [
                      'class' => 'Acme\AppBundle\Entity\Product',
                  ]
    );
 }