Error with 2 ckeditor...

Hi all and sorry fo my english...

I'm developing a page with two ckeditor and on my localhost (windows) seems all to work correctly...

When I upload on a linux server I get this error

Forbidden

You don't have permission to access /admin/file.php on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

This is the code of textarea

<textarea id="editor1" name="descrizione" class="form-control" rows="8" > ....... </textarea>

<textarea id="editor2" name="descrizione" class="form-control" rows="8" > ....... </textarea>

And this on the bottom page

<script src="js/plugins/ckeditor/ckeditor.js" type="text/javascript"></script>
<script type="text/javascript">
$(function() {
CKEDITOR.replace('editor1');
               CKEDITOR.add;
               CKEDITOR.replace('editor2');
               CKEDITOR.add;
});
</script>

Anyone can tell me why I get this error ? With one ckeditor enabled there are no error!

Thanks a lot!