( ! ) Fatal error: Call to a member function getId() on a non-object in /usr/share/tuleap/plugins/docman/include/Docman_Log.class.php on line 52Call Stack#TimeMemoryFunctionLocation10.0001642488{main}( )../index.php:020.08457620416DocmanPlugin->process( )../index.php:2930.10359532704Controler->process( )../docmanPlugin.class.php:35240.11949936536Docman_Controller->actionsManagement( )../Controler.class.php:5950.11989968976Actions->process( )../Docman_Controller.class.php:176960.11989968976Docman_Actions->delete( )../Actions.class.php:5070.12099998920Docman_ItemFactory->deleteSubTree( )../Docman_Actions.class.php:131980.125210150752Docman_Wiki->accept( )../Docman_ItemFactory.class.php:134290.125210150848Docman_ActionsDeleteVisitor->visitWiki( )../Docman_Wiki.class.php:53100.159712063800EventManager->processEvent( )../Docman_ActionsDeleteVisitor.class.php:107110.159712065136EventManager->processEventOnListener( )../EventManager.class.php:87120.159712065136DocmanPlugin->wiki_page_updated( )../EventManager.class.php:104130.159912064824Docman_WikiController->process( )../docmanPlugin.class.php:367140.160012067304Docman_WikiController->actionsManagement( )../Docman_WikiController.class.php:207150.160112067296Docman_WikiController->wikiPageUpdated( )../Docman_WikiController.class.php:50160.197713791584EventManager->processEvent( )../Docman_WikiController.class.php:143170.201413937832EventManager->processEventOnListener( )../EventManager.class.php:87180.201413937832Docman_Log->log( )../EventManager.class.php:102