How to upload image to server in laravel?

Question

Laravel

Hello everyone, I’m making blog articles, I need to upload a preview image for the article, there is a separate column in the post table where the image name is stored, everything is simple, but I can’t upload the image itself to the server, please tell me what the problem is.
Form:
the form itself is large, because is a form for editing an article

<form action="{{ route('posts.update',$item->id) }}" method="POST" enctype=«multipart/form-data»>
.....
<div class="custom-file">
 <input type="file" class="custom-file-input" id="customFile" name="prevyu">
  <label class="custom-file-label" for="customFile" placeholder="Select file"></label>
                            </div>
......
</form>

In controller:

$prevyu = $request->file('prevyu')->store('public/img');

When trying to upload an image, it gives an error:
Call to a member function store() on null
Here is the dump:

Answer 1

The problem was the quotes in the form: method="POST" enctype="multipart/form-data"