Issue: Wiki won't show on pages

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October 5, 2014 12:56 AM

rizwank

New Member

Wiki won't show on pages

Wiki won't show above any pages...

and browsing shows this in my log

Code:

[Sat Oct 04 21:50:44 2014] [error] [client xxx] PHP Fatal error:  Class 'XenForo_CodeEvent' not found in /var/www/html/forum/vault/core/model/receptor/xf.php on line 23, referer: blah
[Sat Oct 04 21:51:28 2014] [error] [client 99.229.220.219] PHP Notice:  Undefined variable: controllerName in /var/www/html/forum/library/vw/XenForo/CodeEventListener/Public.php on line 173

Can you help?

Issue Details

Issue Number 4026

Issue Type Bug

Project VaultWiki 4.x Series

Category Headers / Wiki Blocks

Status Fixed

Priority 2 - Fatal / Database Errors

Affected Version 4.0.0 RC 3

Fixed Version 4.0.0 RC 4

Milestone VaultWiki 4.0 Gold

Software DependencyXenForo 1.x

License TypePaid

Users able to reproduce bug 0

Users unable to reproduce bug 0

Attachments 0

Assigned Users (none)

Tags (none)

October 5, 2014 1:39 AM

pegasus

VaultWiki Team

Neither log message relates to an integrated wiki page not showing over, say, a forum thread. I don't know what version you have before you upgraded. It is possible that your old version was before some new settings were added.

See VaultWiki Admin Panel > Settings > Miscellaneous:
- Allow Wiki Content Integration
- Wiki Content Integration Locations

If these settings are correct, please let me know what other steps you have taken to show wiki content above the forum pages you are testing.

As for the Fatal Error, it is unfortunately a bit crazy (it claims a core XenForo class does not exist), so you would need to know what you were doing when the error was triggered, the URL that triggered it, and how to reproduce.

Reply

October 5, 2014 2:11 AM

rizwank

New Member

Enabling "Wiki Content Integration Locations" to wiki + forum seems to have fixed visibility.

Still getting errors though

Code:

[Sat Oct 04 23:08:29 2014] [error] [client xxx] PHP Fatal error:  Class 'XenForo_CodeEvent' not found in /var/www/html/forum/vault/core/model/receptor/xf.php on line 23, referer: [url]https://xxx/admin.php?wiki/&panel=settings&group=misc[/url]
[Sat Oct 04 23:08:45 2014] [error] [client xxx] PHP Fatal error:  Class 'XenForo_CodeEvent' not found in /var/www/html/forum/vault/core/model/receptor/xf.php on line 23, referer: (a page with a wiki attached)

October 5, 2014 2:30 AM

pegasus

VaultWiki Team

The referer is not the page that shows the error, it is the page that sent the user to the one with the error. I need to now what URL actually shows the error, and what you were doing when it happened.

Reply

October 5, 2014 2:40 AM

rizwank

New Member

Code:

eEventListener/Public.php on line 173
[Sat Oct 04 23:34:26 2014] [error] [client xxx] PHP Warning:  Missing argument 3 for vw_XenForo_CodeEventListener_Public::controller_pre_dispatch() in /var/www/html/forum/library/vw/XenForo/CodeEventListener/Public.php on line 171
[Sat Oct 04 23:34:26 2014] [error] [client xxx] PHP Notice:  Undefined variable: controllerName in /var/www/html/forum/library/vw/XenForo/CodeEventListener/Public.php on line 173
[Sat Oct 04 23:34:27 2014] [error] [clientxx] PHP Warning:  Missing argument 3 for vw_XenForo_CodeEventListener_Public::controller_pre_dispatch() in /var/www/html/forum/library/vw/XenForo/CodeEventListener/Public.php on line 171
[Sat Oct 04 23:34:27 2014] [error] [clientxxx] PHP Notice:  Undefined variable: controllerName in /var/www/html/forum/library/vw/XenForo/CodeEventListener/Public.php on line 173

just saw the above

the referrer was the url i was browsing at, a thread page.
Also when i browse to wiki_index/

October 5, 2014 2:44 AM

pegasus

VaultWiki Team

Rather than your server's log files, please use admin.php?logs/server-error
Each error on that page will show more information that is needed to solve the problem (the stack trace), when you click on it.

Please provide the stack trace for each error, and please post errors in CODE tags. It makes them easier to read.

Reply

October 5, 2014 2:54 AM

rizwank

New Member

Only thing there is :

Code:

ErrorException: Fatal Error: Class name must be a valid object or a string - library/XenForo/Deferred/Abstract.php:49
Generated By: Unknown Account, 26 minutes ago
Stack Trace
#0 [internal function]: XenForo_Application::handleFatalError()
#1 {main}
Request State
array(3) {
  ["url"] => string(45) "https://xxxx/deferred.php"
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(4) {
    ["_xfRequestUri"] => string(22) "/find-new/320844/posts"
    ["_xfNoRedirect"] => string(1) "1"
    ["_xfToken"] => string(8) "********"
    ["_xfResponseType"] => string(4) "json"
  }
}

happening every 30 min.

October 5, 2014 3:03 AM

pegasus

VaultWiki Team

If you would like, I can look into the issue for you. It seems that there is a conflict with another mod that overrides a XenForo function with a different callback signature. Another user reported the same errors a while back but refused to believe me, even though XenForo devs confirmed it themselves. Due to a lack of information from the user, we were not able to resolve the issue at that time.

Please submit a Ticket Support service via the Members tab and I will do my best to get this resolved during the day tomorrow.

Reply
October 9, 2014 5:22 PM
pegasus

VaultWiki Team
Okay, I was able to determine that the Fatal Error occurs in the following cases (always in the URL /yui_loader.php):

Rewrite rules point /yui_combo to yui_loader.php, rather than using the route handler provided by RC 3, OR
The Wiki URL Format is left as the first choice (default)

This Fatal Error is new to RC 3 because it provides plugin access via XenForo_CodeEvent to all VaultWiki classes. In yui_loader.php, however, the XenForo code environment is never loaded. This is fixed in the current ZIP by modifying vault/core/model/receptor/xf.php. Find:

Code:

XenForo_CodeEvent::fire($this->receptor, $this->stimuli);

Replace with:

Code:

if (class_exists('XenForo_CodeEvent', false)) { XenForo_CodeEvent::fire($this->receptor, $this->stimuli); }
Reply
October 9, 2014 5:52 PM
pegasus

VaultWiki Team
Marking this as Fixed, since the Fatal Error from the OP has been fixed.

However, if you still see this error:

Code:

[Sat Oct 04 23:34:26 2014] [error] [client xxx] PHP Warning: Missing argument 3 for vw_XenForo_CodeEventListener_Public::controller_pre_dispatch() in /var/www/html/forum/library/vw/XenForo/CodeEventListener/Public.php on line 171 [Sat Oct 04 23:34:26 2014] [error] [client xxx] PHP Notice: Undefined variable: controllerName in /var/www/html/forum/library/vw/XenForo/CodeEventListener/Public.php on line 173 [Sat Oct 04 23:34:27 2014] [error] [clientxx] PHP Warning: Missing argument 3 for vw_XenForo_CodeEventListener_Public::controller_pre_dispatch() in /var/www/html/forum/library/vw/XenForo/CodeEventListener/Public.php on line 171 [Sat Oct 04 23:34:27 2014] [error] [clientxxx] PHP Notice: Undefined variable: controllerName in /var/www/html/forum/library/vw/XenForo/CodeEventListener/Public.php on line 173

Please submit a support ticket via the Members area and continue the discussion in this other report (https://www.vaultwiki.org/issues/3618/), which is already dedicated to that error. According to the makers of XenForo itself, it is impossible to get that error message using only VaultWiki and XenForo combined. So there is another modification that is firing event 'controller_pre_dispatch' in a way that XenForo does not intend. If we can track down the modification, we can suggest that its author fix their use of the event. As it is now, whatever mod is doing that can break all other modifications (including VaultWiki) that have subscribed to the event 'controller_pre_dispatch'.
Reply

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Issue: Wiki won't show on pages

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