XF 1.4 Help!! Xenforo Errors


Active member
Been going on for a week now, my host and I have no clue how to fix it from happening on and off. But this is the error

An exception occurred: Cannot send headers; headers already sent in /home/enixor/public_html/forum/index.php, line 2 in /home/enixor/public_html/forum/library/Zend/Controller/Response/Abstract.php on line 321

  1. Zend_Controller_Response_Abstract->canSendHeaders() in Zend/Controller/Response/Abstract.php at line 115
  2. Zend_Controller_Response_Abstract->setHeader() in XenForo/ViewRenderer/Abstract.php at line 63
  3. XenForo_ViewRenderer_Abstract->__construct() in XenForo/ViewRenderer/HtmlPublic.php at line 18
  4. XenForo_ViewRenderer_HtmlPublic->__construct() in XenForo/Dependencies/Public.php at line 207
  5. XenForo_Dependencies_Public->getViewRenderer() in XenForo/FrontController.php at line 547
  6. XenForo_FrontController->_getViewRenderer() in XenForo/FrontController.php at line 141
  7. XenForo_FrontController->run() in /home/enixor/public_html/forum/index.php at line 14


Active member
Do this:

Admin Control Panel -> Tools -> File Heath Check
Thank you, what I did was I reuploaded the entire library folder, and that seemed to fix the issue for now. I did click on file check and all files were clear, no issues. I'll keep a look up to see if it keeps happening.


XenForo moderator
Staff member
Files should never normally become corrupt like that.

You may want to contact your host and ask them to investigate.