I am not looking to be first on this - just wanted to see if anyone is running J3.8 and current release of Civi.

  • I upgraded to Joomla 3.8 last week and have been having the same cron error ever since. I tried the tweaks mentioned here: issues.civicrm.org/jira/browse/CRM-21203 But those don't solve the issue. It would be great if there could be a definitive fix. Every time I either update Joomla or CiviCRM, something breaks with CiviCRM. Without fail. Is there an official fix for this yet? Five days without a running cron is a big hassle.
    – severdia
    Commented Sep 26, 2017 at 3:42
  • 1
    As a reminder, Stack Exchange is not a discussion forum, but a Q&A site. Consider rephrasing to something that solicits definitive answers, and where members of the community can vote for a "best" answer.
    – choster
    Commented Sep 26, 2017 at 16:35

4 Answers 4


The fix to the file CRM/Utils/System/Joomla.php suggested in the link https://github.com/civicrm/civicrm-core/pull/11062/files?diff=unified made the cron jobs run again for CiviCRM 4.7.25 and Joomla 3.8.1.

  • I installed the patch linked to above on Oct 6th, and have not since a problem with the CRON since.
    – Neil Z
    Commented Oct 9, 2017 at 18:41
  • Note that this fix won't solve all uses of Joomla cron for some CiviCRM installs. The patch on issues.civicrm.org/jira/browse/CRM-20904 is also necessary. Commented Feb 5, 2018 at 16:27

I took the plunge and upgraded Joomla to 3.8.0 today. I am seeing two problems with it and CiviCRM 4.7.24:

  • cron jobs are not running
  • In the backend, the Administer > Directories page is broken (only loads partially). There are 3 instances of "ReferenceError: CRM is not defined" appearing in Firebug console.

I have not looked into these any further yet. Cron jobs were definitely working prior to the Joomla upgrade but I don't know if the Directories page was already broken.

UPDATE: I've posted on CRM-21203 some changes to CRM/Utils/System/Joomla.php that get cron jobs working (doesn't fix the Directories page). Joomla 3.8.0 has changed the location of some files in libraries/

Joomla 3.8.0 is a required security update for all previous versions.

  • I have raised a bug report: issues.civicrm.org/jira/browse/CRM-21203
    – Jern
    Commented Sep 20, 2017 at 7:00
  • Do you also have JoomSEF installed?
    – Jern
    Commented Sep 20, 2017 at 10:51
  • Thanks for confirming and creating the Jira issue. No I'm not using JoomSEF. I noticed that in Joomla 3.7, the class JObject is defined in libraries/joomla/object/object.php. In Joomla 3.8.0 object.php is not present and JObject is not defined anywhere else. Commented Sep 20, 2017 at 11:47
  • Actually I can see now that JObject is now supposed to be an alias for CMSObject so not sure what the problem is. Commented Sep 20, 2017 at 11:57
  • I suspect that the JObject error may be just be a symptom. It could be that something in CiviCRM doesn't take account of the new routing regime in Joomla 3.8. docs.joomla.org/J3.x:New_Routing_System This could also explain the Directories page mess-up.
    – Jern
    Commented Sep 20, 2017 at 13:58

I have a post-3.8 upgrade issue: I don't think it's related to the issue above but sharing in answer to the OP: Joomla 3.8 & CiviCRM 4.7.x - front-end error 500 when logged in


The issue was not fixed in 4.7.27, appears to be slated for 4.7.28. Manually applying the fix in Joomla.php file here seems to have resolved it https://github.com/civicrm/civicrm-core/pull/11062

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