This error is not specific to CKFinder. It is an Apache error.
This error means that the access to the directory on the hard disk was denied by an Apache configuration.
I would first double check your BaseDir and URL settings, and confirm they point to a folder, and try writing a file to that folder in your PHP to check it can be done.
Re: 403 Forbiden
This error means that the access to the directory on the hard disk was denied by an Apache configuration.
I would first double check your BaseDir and URL settings, and confirm they point to a folder, and try writing a file to that folder in your PHP to check it can be done.