add_feed failed to open stream

Remove the last / in

include(TEMPLATEPATH . '/events.php/');

If you cannot find a file, check with file_exists( $path ) first.

Also TEMPLATEPATH is deprecated now, use get_stylesheet_directory() instead.

And your feed is located at /gpevent', not/gpevents’ as Stephen Harris noted.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)