Cant see any task in /orcherstra/app while python manage.py interactive_simple_workflow_demo

[davidkrcil]

When I run python manage.py interactive_simple_workflow_demo and I am in some problems. Please could you help? Look at https://pastebin.com/1eKz05Ui There you can see the project data. I had to change my url for crawl because before it ended with error Not image found at given URL. I pressed enter as I were guided by the demo script. When I go to /opera/app as demo I cant see any task available for demo worker. The some situation is when I created worker for admin. Still cant see any tasks to assign. In the terminal I am getting: Uh oh! It looks like the task did not get completed (see 'tasks.rate.status' in the output above.)
When I press button New delivery task I get No tasks available at the moment. What I am doing wrong? Thank you very much