Topic on Extension talk:Collaboration Diagram

Does anyone know the cause of this error just after installation (in MW1.31)?

[30-Jan-2020 15:08:44 Europe/Berlin] PHP Fatal error:  Uncaught Error: Call to undefined function wfMsgForContent() in /var/www/html/extensions/CollaborationDiagram/CollaborationDiagram.php:466

Stack trace:

#0 /var/www/html/extensions/CollaborationDiagram/CollaborationDiagram.php(488): showCollaborationDiagramTab(Object(SkinVector), Array)

#1 /var/www/html/includes/Hooks.php(177): showCollaborationDiagramTabInVector(Object(SkinVector), Array)

#2 /var/www/html/includes/Hooks.php(237): Hooks::callHook('SkinTemplateNav...', Array, Array, NULL, 'showCollaborati...')

#3 /var/www/html/includes/skins/SkinTemplate.php(1141): Hooks::runWithoutAbort('SkinTemplateNav...', Array)

#4 /var/www/html/includes/skins/SkinTemplate.php(476): SkinTemplate->buildContentNavigationUrls()

#5 /var/www/html/includes/skins/SkinTemplate.php(249): SkinTemplate->prepareQuickTemplate()

#6 /var/www/html/includes/OutputPage.php(2388): SkinTemplate->outputPage()

#7 /var/www/html/includes/exception/MWExceptionRenderer.php(137): OutputPage->output()

#8 /var/www/html/includes/exception/MWExceptionRen in /var/www/html/extensions/CollaborationDiagram/CollaborationDiagram.php on line 466

Note. Extension:GraphViz and Extension:SocialProfile could be installed without errors.

it is simply an obsolete variable, it needs to be updated, you can check more details in this topic Topic:Uj8fnyr5utxokkyd