Image not found in laravel

My application is displaying images perfectly as I am displaying them on the other pages. I need to apply a watermark on all of those images. Whenever I try to get the image dynamically to manipulate it gives me the error 404 not found. However, the link is identical to all other images displaying on the website. I have tried Image intervention It works fine for the images in public/img folder but id does not work for the images in the storage/app/products folder. link:http://usm.gondalgroup.com/refurbished_tetra_pak_machines_supplier_home

working link obtained by inspecting image:http://usm.gondalgroup.com/storage/app/products/pRComIu5U3TkCSppb2PsjxtkcmgpFk4ZGbq4mbRt.jpeg

The link I made using controller and loop: http://usm.gondalgroup.com/storage/app/products/B6ITcW8iA4gyVKbqylw3qweGsqTLMjslIyyvIjes.jpeg

via Chebli Mohamed