Intervention Image source not readable

Well, i am using intervention with laravel 5.5 to upload photos. When i create a new recipe(in my case), all is working and the photos are being uploaded succefully.

This is the code for the initial upload:

$front_image = $request->file('front_image');

$frontImageName = md5(time()) . '.' . $front_image
                    ->getClientOriginalExtension();

$locationfi = public_path('photos/front/' . $frontImageName);

Image::make($front_image)
    ->resize(454,340)
    ->insert(public_path('photos/logo.png'),'bottom-right')
    ->save($locationfi);

$recipe->front = $frontImageName;

All standard stuff. But when i try to edit a recipe, i get Image source not readable. This is the code for the re upload:

        $front_image = $request->file('front_image');

        $frontImageName = md5(time()).'.'.$front_image
                      ->getClientOriginalExtension();

        $location = public_path('photos/front/'.$frontImageName );

        Image::make($front_image)->resize(690,517)
            ->insert(public_path('photos/tk.png'),'bottom-right')
        ->save($location);
        $recipe->front=$imageName;

I use enctype="multipart/form-data" in both forms, for create and update. On the edit form i also use {{method_field('PUT'}}.

What am i missing here? Thanks.