I have a Joomla! 3.8 site that is running fine on the front-end. However, when I try to access /administrator/ I get the following error:


There is nothing new in /administrator/error_log. However, in the error_log of the root directory, there is this log hundreds of times:

[20-Jun-2018 11:00:40 America/Chicago] PHP Warning:  require_once(/home7/userfolder/public_html/libraries/joomla/document/html/renderer/head.php): failed to open stream: No such file or directory in /home7/userfolder/public_html/templates/consultpress/error.php on line 42
[20-Jun-2018 11:00:40 America/Chicago] PHP Fatal error:  require_once(): Failed opening required '/home7/userfolder/public_html/libraries/joomla/document/html/renderer/head.php' (include_path='.:/opt/php70/lib/php') in /home7/userfolder/public_html/templates/consultpress/error.php on line 42

Line 42:


Is this related to the ERROR 504? If not, what could be the issue?

I've contacted the host (BlueHost) and they assure me it is a Joomla! issue. Any help?


This issue also exists in Gantry4 templates. Below is the fix for that:

if (!class_exists('JDocumentRendererHead')) {
  • Well, that solved the error in the error log, but had nothing to do with the 504 error. :/ Jun 21 '18 at 17:20
  • Who is your host? Have you reached out to them? 504's can be caused from their side as well. Jun 22 '18 at 11:25
  • Yes, I mentioned that in the question. Bluehost says it is a Joomla! issue. Jun 22 '18 at 14:12
  • Sorry, I missed that. Check out this advice from Akeeba guys: akeebabackup.com/support/admin-tools/Ticket/… Jun 22 '18 at 18:45
  • I've disabled error reporting via configuration.php, disabled Admin Tools via database, uploaded default .htaccess, and upgraded to PHP 7.0...nothing has changed. :( Jun 23 '18 at 15:35

We ended up moving the site to another host and the problem was resolved.

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