What error are you getting, specifically.

There is not enough information here for people to help you.

Evan, i clear the cache and solved. All urls were not loaded in https while keeping the http

I don't get a any error, nothing. No, the files not in directory of uploads.  $_Files is empty.

But i missed the 'enctype' => 'multipart/form-data' in elgg_view_form, so i solved this problem.

    $resized = get_resized_image_from_uploaded_file('image_upload', 120, 120, false, true);

    if($resized){
        $filehandler = new ElggFile();
        $filehandler->owner_guid = $guid_classified;
        $filehandler->setFilename("classified/" . $guid_classified . "-classified.jpg");
        $filehandler->open("write");
        $filehandler->write($resized);
        $filehandler->close();
    }

@Marcelo de Andrade, what is the main purpose for your custom 120px by 120px image form? Is it to allow your users to place ads or advertise on your site?

Yes, @Tom. I created a space for ads in my elgg site and the users can upload a image