api.authenticated_user_name causes problems

[HaujetZhao]

In my case, the api.authenticated_user_name is None, and it causes problem in line 121, str cannot concatenate None.

After commenting the lines relted to api.authenticated_user_name, the script ran then.

[Andy8r0X]

#49 Solution: Chage authenticated_user_name to authenticated_user_id
Line 84 and Line 121