from os import environ SESSION_CONFIGS = [ dict( name='marketing_simulation', display_name="Digital Marketing Simulation Lab", app_sequence=['marketing_app'], num_demo_participants=2, ), ] # Essential Settings - Every line here is required by oTree SESSION_CONFIG_DEFAULTS = dict( real_world_currency_code='USD', use_points=True, participation_fee=0.00, doc="", # This line solves your current error: real_world_currency_per_point=0.01 ) LANGUAGE_CODE = 'en' REAL_WORLD_CURRENCY_CODE = 'USD' USE_POINTS = True ADMIN_USERNAME = 'admin' ADMIN_PASSWORD = 'password' DEMO_PAGE_INTRO_HTML = """ """ SECRET_KEY = '1234567890' # Essential for oTree 5+ and 6+ INSTALLED_APPS = ['otree'] ROOMS = [ dict( name='marketing_room', display_name='Marketing Simulation Room', ), ]