- {if ($user->isPluginEnabled('ch') && ($user->can('view_own_charts') || $user->can('view_charts'))) && ($smarty.const.MODE_PROJECTS == $user->getTrackingMode()
- || $smarty.const.MODE_PROJECTS_AND_TASKS == $user->getTrackingMode() || $user->isPluginEnabled('cl'))}
+ {if ($user->exists() && $user->isPluginEnabled('ch') && ($user->can('view_own_charts') || $user->can('view_charts'))) &&
+ ($smarty.const.MODE_PROJECTS == $user->getTrackingMode() || $smarty.const.MODE_PROJECTS_AND_TASKS == $user->getTrackingMode() ||
+ $user->isPluginEnabled('cl'))}