Error message

• Warning: fopen(/var/www/sites/default/files/.ht.filecache/cache_bootstrap-variables): failed to open stream: No space left on device in DrupalFileCache->set() (line 168 of /var/www/sites/all/modules/filecache/filecache.inc).
• Warning: fopen(/var/www/sites/default/files/.ht.filecache/cache_field-field file 91365): failed to open stream: No space left on device in DrupalFileCache->set() (line 168 of /var/www/sites/all/modules/filecache/filecache.inc).
• Warning: fopen(/var/www/sites/default/files/.ht.filecache/cache_field-field node 119878): failed to open stream: No space left on device in DrupalFileCache->set() (line 168 of /var/www/sites/all/modules/filecache/filecache.inc).
• Warning: fopen(/var/www/sites/default/files/.ht.filecache/cache_metatag-output node 119878 commercials und 218535 full 200 http adland.tv ^): failed to open stream: No space left on device in DrupalFileCache->set() (line 168 of /var/www/sites/all/modules/filecache/filecache.inc).
• Warning: fopen(/var/www/sites/default/files/.ht.filecache/cache_menu-links main-menu page node^119878 en 1 0): failed to open stream: No space left on device in DrupalFileCache->set() (line 168 of /var/www/sites/all/modules/filecache/filecache.inc).
• Warning: fopen(/var/www/sites/default/files/.ht.filecache/cache_menu-links menu-add-content page node^119878 en 1 0): failed to open stream: No space left on device in DrupalFileCache->set() (line 168 of /var/www/sites/all/modules/filecache/filecache.inc).
• Warning: fopen(/var/www/sites/default/files/.ht.filecache/cache_menu-links menu-sidebar-menu page node^119878 en 1 0): failed to open stream: No space left on device in DrupalFileCache->set() (line 168 of /var/www/sites/all/modules/filecache/filecache.inc).
• Warning: fopen(/var/www/sites/default/files/.ht.filecache/cache_menu-links menu-categories page node^119878 en 1 0): failed to open stream: No space left on device in DrupalFileCache->set() (line 168 of /var/www/sites/all/modules/filecache/filecache.inc).
• Warning: fopen(/var/www/sites/default/files/.ht.filecache/cache_block-profile author-information tb_wall r.1 http ^^adland.tv^commercials^evian-baby-swimmers-1999-040-uk): failed to open stream: No space left on device in DrupalFileCache->set() (line 168 of /var/www/sites/all/modules/filecache/filecache.inc).
• Warning: fopen(/var/www/sites/default/files/.ht.filecache/cache_menu-links navigation page node^119878 en 1 0 trail): failed to open stream: No space left on device in DrupalFileCache->set() (line 168 of /var/www/sites/all/modules/filecache/filecache.inc).