Error Server Response Status 500

I'm having problems trying to integrate ckfinder. I've done everything possible, and searched the entire web.

When I try to upload an image or open the server it shows me this message

URL Requested:
"http://www.miweb.com/news/ckfinder/core/connector/php/connector.php?command=Init&type=Images&langCode=es"
Server response:
Status 500