Warning and wp-super-cache

Hello, I hope someone can help. My site http://www.taasingeplads.dk is unavailable, and all I’m getting is this message. Also I can’t login. If I try I get a similar message. What can I do? I’m not a developer, so not very technically skilled. Thank you!

Warning: include(/mounted-storage/home125/sub006/sc70049-DLBP/taasingeplads.dk/wp-content/plugins/wp-super-cache/wp-cache-base.php): failed to open stream: No such file or directory in /mounted-storage/home23/sub006/sc70049-DLBP/taasingeplads.dk/wp-content/plugins/wp-super-cache/wp-cache.php on line 65

Warning: include(): Failed opening ‘/mounted-storage/home125/sub006/sc70049-DLBP/taasingeplads.dk/wp-content/plugins/wp-super-cache/wp-cache-base.php’ for inclusion (include_path=’.:/usr/share/php5/’) in /mounted-storage/home23/sub006/sc70049-DLBP/taasingeplads.dk/wp-content/plugins/wp-super-cache/wp-cache.php on line 65

Warning: include_once(/mounted-storage/home125/sub006/sc70049-DLBP/taasingeplads.dk/wp-content/plugins/wp-super-cache/ossdl-cdn.php): failed to open stream: No such file or directory in /mounted-storage/home23/sub006/sc70049-DLBP/taasingeplads.dk/wp-content/plugins/wp-super-cache/wp-cache.php on line 82

Warning: include_once(): Failed opening ‘/mounted-storage/home125/sub006/sc70049-DLBP/taasingeplads.dk/wp-content/plugins/wp-super-cache/ossdl-cdn.php’ for inclusion (include_path=’.:/usr/share/php5/’) in /mounted-storage/home23/sub006/sc70049-DLBP/taasingeplads.dk/wp-content/plugins/wp-super-cache/wp-cache.php on line 82

Warning: Cannot modify header information – headers already sent by (output started at /mounted-storage/home23/sub006/sc70049-DLBP/taasingeplads.dk/wp-content/plugins/wp-super-cache/wp-cache.php:65) in /mounted-storage/home23/sub006/sc70049-DLBP/taasingeplads.dk/wp-login.php on line 387

Warning: Cannot modify header information – headers already sent by (output started at /mounted-storage/home23/sub006/sc70049-DLBP/taasingeplads.dk/wp-content/plugins/wp-super-cache/wp-cache.php:65) in /mounted-storage/home23/sub006/sc70049-DLBP/taasingeplads.dk/wp-login.php on line 400

Warning: Cannot modify header information – headers already sent by (output started at /mounted-storage/home23/sub006/sc70049-DLBP/taasingeplads.dk/wp-content/plugins/wp-super-cache/wp-cache.php:65) in /mounted-storage/home23/sub006/sc70049-DLBP/taasingeplads.dk/wp-includes/pluggable.php on line 1224

The page I need help with: [log in to see the link]