Laravel permission folder - I cant upload image into public/images

I have a folder images into public folder and when I try to write an image into that folder I got error:

FileException in File.php line 113: Unable to write in the "/home/USERNAME/public_html/public/images/Custaccounts/1102" directory

My all folders is with 755 permissions

How I can solve my problem? Why there is "Unable to write" error ?

via Chebli Mohamed