title: Upload a file with PUT method on POSTMAN
body: <p>Hi I'm getting an error when I try to Update image in the postman</p>
  
  <p>My Controller </p>
  
  <pre><code>   $validator =    Validator::make($request-&gt;all(), [
      'category_id'=&gt; 'required',      
      'product_name'=&gt; 'required', 
      'product_description'=&gt; 'required',      
      'product_img'=&gt; 'required' 
   ] );
      if ($validator -&gt; fails()) {
          return $this-&gt;sendError('error validation', $validator-&gt;errors());
      }
      $product = Product::findOrFail($id) ;
  
      $product-&gt;category_id = $request-&gt;input('category_id');
      $product-&gt;subcat_id = $request-&gt;input('subcat_id');
      $product-&gt;product_name = $request-&gt;input('product_name');
      $product-&gt;product_description = $request-&gt;input('product_description');
      $product-&gt;product_properties = $request-&gt;input('product_properties');
      $product-&gt;product_img =  $request-&gt;file('product_img')-&gt;store('images');
      $product-&gt;product_pdf =  $request-&gt;file('product_pdf')-&gt;store('files');
      if($product-&gt;update()){
          return $this-&gt;sendResponse($product-&gt;toArray() , 'Product Updated Succesfully');
      }
  </code></pre>
  
  <p>My PostMan row </p>
  
  <pre><code>"product_img":"Downloads/screencapture-file-C-Users-gkpro-Desktop-ui-Semantic-UI-master-examples-navbar-html-2019-01-03-20_31_47.png"
  </code></pre>
  
  <p>I get this error </p>
  
  <p>Call to a member function store() on null</p>