Traceback (most recent call last):
  File "/var/www/coop/PyWeb/Tools/Components/Controllers.py", line 192, in run
    cls.process(view)
  File "/var/www/coop/PyWeb/Tools/Actions/Stubs/Model.py", line 45, in process
    super(ObjectForm, cls).process(view)
  File "/var/www/coop/Local/Actions/Stubs/Interface.py", line 73, in process
    PurchaseHelper.setGroupsTree(PurchaseGroupsDS.generate())
  File "/var/www/coop/Local/Components/Datasets.py", line 95, in generate
    cls.processRows(rows)
  File "/var/www/coop/Local/Components/Datasets.py", line 124, in processRows
    nodecounts = cls.getCounts()
  File "/var/www/coop/Local/Components/Datasets.py", line 104, in getCounts
    user = PublicUser()["user"]
TypeError: 'NoneType' object has no attribute '__getitem__'