[O] ob-python specify :session error

[stardiviner]

I have following org content:

I define variable in Python inferior REPL (launched by [M-x run-python])

Python> name = "chris"


#+begin_src python :session "*Python*"
print(name)
#+end_src

But I got error:

> org-babel-python-evaluate-session: Buffer *Python-*Python** does not 
exist or has no process