1_MX4xMzY1MjM5Mn4xNDAuMTgwLjU5LjZ-MjAxMi0wNC0wNyAxNDo0NDowNi40MTk0MzkrMDA6MDB-MC4yNDI0MzYyMTg4NTJ-
Traceback (most recent call last):
File "sample.py", line 13, in <module>
token = opentok_sdk.generate_token(session.session_id, 'PUBLISHER', None, connectionMetadata)
File "/Users/TianlongWang/OpenTok/Opentok-Python-SDK/OpenTokSDK.py", line 101, in generate_token
raise OpenTokException('%s is not a valid role' % role)
OpenTokSDK.OpenTokException: PUBLISHER is not a valid role