Fix exception from SendItController route

Fix exception when using SendIt for project files e.g. export results

DAGSwitcher.php

@@ -29,21 +29,26 @@ class DAGSwitcher extends AbstractExternalModule
  private $super_user;
  private $user;
  private $user_rights;
+ private $Proj;
 
- public static $IgnorePages = array('FileRepository','ProjectSetup','ExternalModules','UserRights','DataAccessGroups');
+ public static $IgnorePages = array('FileRepository','ProjectSetup','ExternalModules','UserRights','DataAccessGroups','SendItController');
 
  public function __construct() {
  parent::__construct();
- global $lang, $user_rights;
+ global $Proj, $lang, $user_rights;
  $this->lang = &$lang;
  $this->page = PAGE;
  $this->project_id = intval(PROJECT_ID);
  $this->super_user = SUPER_USER;
  $this->user = strtolower(USERID);
  $this->user_rights = &$user_rights;
+ $this->Proj = $Proj;
  }
 
  public function hook_every_page_top($project_id) {
+ global $Proj;
+ if (!isset($this->Proj)) { return; } // return if no project context even if project_id set (e.g. in export SendIController)
+
  $pageRoute = $this->getPageRoute();
 
  if ($pageRoute==='DataAccessGroups') {