Warning: MySQL server has gone away query: UPDATE cache SET data

Hello every body,
I have error when I edit a content of content type "staff our team". The content type "staff our team" have field_staff_photo. I think this error by field_staff_photo, please help me fix it.
Thanks you very much.
Warning: mysqli_query() [function.mysqli-query]: MySQL server has gone away in E:\xampp\htdocs\logivac\includes\database.mysqli.inc on line 114

Warning: mysqli_query() [function.mysqli-query]: Error reading result set's header in E:\xampp\htdocs\logivac\includes\database.mysqli.inc on line 114

Warning: MySQL server has gone away query: UPDATE cache SET data = 'a:1064:{s:21:\"add_date_format_title\";s:0:\"\";s:20:\"add_date_format_type\";s:0:\"\";s:11:\"admin_theme\";s:5:\"seven\";s:20:\"agree_terms_zencoder\";i:1;s:9:\"anonymous\";s:9:\"Anonymous\";s:12:\"array_filter\";b:1;s:11:\"block_cache\";s:1:\"0\";s:16:\"boost_core_clear\";s:36:\"Clear core page cached data: 0 pages\";s:17:\"boost_crawler_key\";s:32:\"abdf3443856f6883df41175e4e62e27a\";s:5:\"cache\";i:0;s:23:\"cache_flush_cache_block\";i:1315301115;s:24:\"cache_flush_cache_filter\";i:0;s:22:\"cache_flush_cache_page\";i:1315301115;s:14:\"cache_lifetime\";s:3:\"600\";s:9:\"clean_url\";s:1:\"1\";s:5:\"clear\";s:17:\"Clear cached data\";s:16:\"comment_activity\";s:1:\"0\";s: in E:\xampp\htdocs\logivac\includes\database.mysqli.inc on line 134

Warning: MySQL server has gone away query: SELECT name, filename, throttle FROM system WHERE type = 'module' AND status = 1 AND bootstrap = 1 ORDER BY weight ASC, filename ASC in E:\xampp\htdocs\logivac\includes\database.mysqli.inc on line 134

Warning: MySQL server has gone away query: SELECT * FROM languages ORDER BY weight ASC, name ASC in E:\xampp\htdocs\logivac\includes\database.mysqli.inc on line 134

Warning: Invalid argument supplied for foreach() in E:\xampp\htdocs\logivac\includes\bootstrap.inc on line 1281

Warning: Invalid argument supplied for foreach() in E:\xampp\htdocs\logivac\includes\language.inc on line 40

Warning: MySQL server has gone away query: SELECT COUNT(pid) FROM url_alias in E:\xampp\htdocs\logivac\includes\database.mysqli.inc on line 134

Fatal error: Call to undefined function filter_xss() in E:\xampp\htdocs\logivac\includes\common.inc on line 655

Warning: MySQL server has gone away query: UPDATE sessions SET uid = 1, cache = 1315301177, hostname = '127.0.0.1', session = 'ckeditor|a:2:{s:13:\"UserFilesPath\";s:29:\"/logivac/sites/default/files/\";s:21:\"UserFilesAbsolutePath\";s:44:\"E:/xampp/htdocs/logivac/sites/default/files/\";}node_overview_filter|a:1:{i:0;a:2:{i:0;s:4:\"type\";i:1;s:5:\"staff\";}}', timestamp = 1315305240 WHERE sid = 'lu3qb68gtemqvm0eviv17h4e12' in E:\xampp\htdocs\logivac\includes\database.mysqli.inc on line 134