Laravel 5.5 - a particular field is not inserting

I have a laravel project which is in laravel 5.5. I have manually created an extra field "uploaded_image" in the existing "product" table. When I passed the data into the laravel controller (ProductController.php), all the existing fields are updated except the newly created field. Below is my ProductController code:

public function update(Request $request, $id)
{
    $data = $request->validate([
        'product_name' => 'required',
        'description' => 'required',
        'rating' => 'required'
    ]);

    $uploaded_image = $request->input('uploaded_image');
    $data['uploaded_image'] = $uploaded_image['filename']; // which is abc.png
    $product = Product::findOrFail($id);
    $product->update($data);

    return response()->json($data);
}

via Chebli Mohamed