Multiupload failed to open stream

Ahojte, mám problém s upload obrázkov na FTP. Cesta v chybovej hláške je správna rovnako tak priečinky existujú a práva su nastavené. Zvláštne mi príde že sa súbor nikde neuploadne.

foreach ($values->attachment as $image) {

                if ($image->isImage() and $image->isOk()) {

                    $image_ext = strtolower(mb_substr($image->getSanitizedName(), strrpos($image->getSanitizedName(), ".")));
                    $image_name = $values->product_code . $image_ext;

                    $truncate = Strings::lower(Strings::truncate($values->product_code, 3, ''));
                    $main_folder = '/images/product_images' . $truncate;
                    $small_folder = '/images/product_images/' . $truncate . '/small/';
                    $medium_folder = '/images/product_images/' . $truncate . '/medium/';

                    $image->move($this->context->parameters['wwwDir'] . $main_folder . '/' . $image_name);

                   /* Medium image*/
                    $image->resize(241, 241, Image::EXACT);
                    $image->sharpen();
                    $image->save($this->context->parameters['wwwDir'] . $medium_folder . $image_name);
                    }
                    }

Warning
imagepng(/www/e/l/u109443/public_html/www/images/product_images/aaa/medium/AAA.png): failed to open stream: No such file or directory