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.