Error message

• Warning: unlink(/var/www/blacasa.vn/filecache/cache_bootstrap/sites_default_cache_bootstrap/variables): No such file or directory in DrupalFileCache->get() (line 250 of /var/www/blacasa.vn/public_html/sites/all/modules/contrib/filecache/filecache.inc).
• Notice: fwrite(): write of 8192 bytes failed with errno=28 No space left on device in DrupalFileCache->set() (line 368 of /var/www/blacasa.vn/public_html/sites/all/modules/contrib/filecache/filecache.inc).