Thảo luận Lỗi undefinded index trong website

Gần đây website em hay hiển thị lỗi trong error log: khi thì là
- Undefinded index: post
hoặc là:
- Undefinded index: host

Không biết lỗi trên là lỗi gì vậy mọi người!
Mong anh chị giúp đỡ ạ!
Em xin cám ơn

 

Dạ chi tiết lỗi em như sau ạ!


Error info:

Stack Trace:

Mã:

#0 /var/www/html/chonguoiviet.net/library/Waindigo/ThreadThumbnails/Model/ThreadThumbnails.php(1025): XenForo_Application::handlePhpError(8, 'Undefined index...', '/var/www/html/c...', 1025, Array)
#1 /var/www/html/chonguoiviet.net/library/Waindigo/ThreadThumbnails/Model/ThreadThumbnails.php(156): Waindigo_ThreadThumbnails_Model_ThreadThumbnails->_getAttachments('post', Array)
#2 /var/www/html/chonguoiviet.net/library/Waindigo/ThreadThumbnails/Extend/XenForo/Search/DataHandler/Thread.php(21): Waindigo_ThreadThumbnails_Model_ThreadThumbnails->addThumbsToSearchThreads(Array)
#3 /var/www/html/chonguoiviet.net/library/XenForo/Model/Search.php(280): Waindigo_ThreadThumbnails_Extend_XenForo_Search_DataHandler_Thread->getDataForResults(Array, Array, Array)
#4 /var/www/html/chonguoiviet.net/library/XenForo/Model/Search.php(314): XenForo_Model_Search->getViewableSearchResultData(Array, Array, false, NULL)
#5 /var/www/html/chonguoiviet.net/library/XenForo/Search/Searcher.php(114): XenForo_Model_Search->getViewableSearchResults(Array, NULL)
#6 /var/www/html/chonguoiviet.net/library/Tinhte/XenTag/ControllerPublic/Tag.php(236): XenForo_Search_Searcher->searchType(Object(Tinhte_XenTag_Search_DataHandler_General), '', Array, 'date')
#7 /var/www/html/chonguoiviet.net/library/Tinhte/XenTag/ControllerPublic/Tag.php(101): Tinhte_XenTag_ControllerPublic_Tag->_doSearch('dat ban gia r\xE1\xBA...')
#8 /var/www/html/chonguoiviet.net/library/XenForo/FrontController.php(337): Tinhte_XenTag_ControllerPublic_Tag->actionView()
#9 /var/www/html/chonguoiviet.net/library/XenForo/FrontController.php(134): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#10 /var/www/html/chonguoiviet.net/index.php(13): XenForo_FrontController->run()
#11 {main}

Request State:

Mã:

array (size=3)
  'url' => string 'http://chonguoiviet.net/tags/dat%20ban%20gia%20r%E1%BA%BB/' (length=58)
  '_GET' =>
    array (size=0)
      empty
  '_POST' =>
    array (size=0)
      empty