Hi,

I am trying to generate api-ref doc from template by running "tox -e snaphot_transfer" but I keep getting the same error pasted in the link  https://paste.openstack.org/show/bFPbWKQAKRbIds4R0wWn  

and I have installed the missing dependency as shown below, anyone have an Idea what the issue could have been? 

Thanks for your time.