WARNING: Undefined variable $group_modifiers at line 192 in /Volumes/Library/WebDocuments/src/controllers/GroupController.php
  in seekquarry\yioop\controllers\GroupController->processSession, line 113 in /Volumes/Library/WebDocuments/src/controllers/GroupController.php 
  called from seekquarry\yioop\controllers\GroupController->processRequest, line 200 in /Volumes/Library/WebDocuments/src/index.php 
  called from seekquarry\yioop\bootstrap, line 59 in /Volumes/Library/WebDocuments/index.php 
  called from seekquarry\yioop\passthruYioopRequest, line 391 in /Volumes/Library/WebDocuments/src/library/WebSite.php 
  called from seekquarry\yioop\library\WebSite->trigger, line 350 in /Volumes/Library/WebDocuments/src/library/WebSite.php 
...
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