Issue: Undefined offset: 1

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February 20, 2017 1:30 PM

Alfa1

Distinguished Member

Undefined offset: 1

Code:

Error Info
ErrorException: Undefined offset: 1 - vault/core/controller/cp/index/vw.php:165
Generated By: Alfa, 7 minutes ago

Stack Trace
#0 /var/www/html/vault/core/controller/cp/index/vw.php(165): XenForo_Application::handlePhpError(8, 'Undefined offse...', '/var/www/html/v...', 165, Array)
#1 /var/www/html/vault/core/controller/cp/index/vw.php(33): vw_CP_Index_Controller->_version()
#2 /var/www/html/library/vw/XenForo/ControllerAdmin/Wiki.php(118): vw_CP_Index_Controller->execute('version', 'post')
#3 /var/www/html/library/XenForo/FrontController.php(351): vw_XenForo_ControllerAdmin_Wiki->actionIndex()
#4 /var/www/html/library/XenForo/FrontController.php(134): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#5 /var/www/html/admin.php(13): XenForo_FrontController->run()
#6 {main}
Request State
array(3) {
  ["url"] => string(56) "http://site.nl/admin.php?wiki/&panel=index"
  ["_GET"] => array(2) {
    ["wiki/"] => string(0) ""
    ["panel"] => string(5) "index"
  }
  ["_POST"] => array(4) {
    ["ajax"] => string(1) "1"
    ["_xfToken"] => string(8) "********"
    ["do"] => string(7) "version"
    ["panel"] => string(5) "index"
  }
}

Issue Details

Issue Number 4925

Issue Type Bug

Project VaultWiki 4.x Series

Category Admin Panel

Status Fixed

Priority 4 - Warnings / Script Errors

Affected Version 4.0.16

Fixed Version 4.0.17

Milestone (none)

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)

February 21, 2017 9:31 AM

pegasus

VaultWiki Team

This occurs when the remote version-compare function is unable to parse the value of your installed version as reported by your site, and thus cannot locate whether there is a newer build on that branch. Depending on some other factors, the server might reply with the latest version without build numbers, or will simply send a 'Check failed' response. Neither of these responses were expected by the local installation and resulted in an undefined offset message.

This is fixed in the next release.

Reply
February 24, 2017 11:51 AM

Alfa1

Distinguished Member

It seems to me that this is the only bug which keeps me from importing to my live site now. For all other issues I have fixes.

Reply
February 24, 2017 12:09 PM

pegasus

VaultWiki Team

There is absolutely no reason that this should be interfering with the import. It appears on the wiki admin index page, not on the import.

Reply
February 24, 2017 12:56 PM

Alfa1

Distinguished Member

Yes, I know. What I am afraid of is that after import and putting the wiki life, I may get regular errors from this, leading to problems?

Reply
February 24, 2017 1:18 PM

pegasus

VaultWiki Team

The error is an E_NOTICE. Those kinds of errors are generally not serious at all, except some cases when the evaluation to NULL causes the script to enter an unexpected code block through a conditional that expects a populated offset.

The remote version check, which queries our server to find out if a new version is available to download and displays that information on the same page, only occurs on the wiki admin index page. This error is a result of that version check failing for some reason. It will not cause problems in any part of the wiki, because it is not used or referred to anywhere else. While it is possible that you might see this error regularly, it would only be when visiting that admin page.

Reply
February 24, 2017 3:36 PM

Alfa1

Distinguished Member

If I get that error on wiki index, then could it prevent me from accessing settings after I migrate wiki?

Reply
February 24, 2017 4:10 PM

pegasus

VaultWiki Team

An E_NOTICE is a silent error; it only appears in your logs. If you see an exception directly, outside the logs, then you are using debug mode live. Do not do that, as it can cause problems. If the E_NOTICE occurred inside a DM (this one doesn't), an error message that is normally harmless might cause data corruption. Only use debug mode on a test/development installation, or enable/disable it only as needed.

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Issue: Undefined offset: 1

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