Some thing wrong while Creating an Upstart service for uWSGI

[Shellmode]

After creating and configuring the files, when i started the service flask-uwsgi :
sudo service flask-uwsgi start

I found some thing wrong with it.

In /var/log/flask-uwsgi/flask-uwsgi.log

'''
*** Starting uWSGI 2.0.10 (32bit) on [Wed Jun 24 12:52:11 2015] ***
compiled with version: 4.8.4 on 24 June 2015 12:42:55
os: Linux-3.13.0-55-generic #92-Ubuntu SMP Sun Jun 14 18:33:09 UTC 2015
nodename: iZ94xmv8p4cZ
machine: i686
clock source: unix
detected number of CPU cores: 1
current working directory: /home/shellmode/foodfun
detected binary path: /usr/local/bin/uwsgi
!!! no internal routing support, rebuild with pcre support !!!
uWSGI running as root, you can use --uid/--gid/--chroot options
setgid() to 1000
setuid() to 1000
your processes number limit is 7861
your memory page size is 4096 bytes
detected max file descriptor number: 1024
lock engine: pthread robust mutexes
thunder lock: disabled (you can enable it with --thunder-lock)
uwsgi socket 0 bound to UNIX address /var/run/flask-uwsgi/flask-uwsgi.sock fd 6
Python version: 2.7.6 (default, Mar 22 2014, 23:03:14) [GCC 4.8.2]
Set PythonHome to venv
ImportError: No module named site
'''

And to find the status of service flask-uwsgi :
sudo service flask-uwsgi status

The result is :

'''
flask-uwsgi stop/waiting
'''

flask-uwsgi should not be started correctly
Is there any ImportError?
But in other py file or python shell, i can import module site

Hope for your response, thanks

[Shellmode]

Sorry for my careless, it's just a simple mistake.

Firstly create the virtualenv env
virtualenv env

But I change the home in flask-uwsgi.ini from env to venv by mistake.

---

But i got another problem, after configuring the files, i just got the index page of nginx ( from /var/www/index.html )
just like configure in file flask-uwsgi

When I delete the first server{...}, reload the configure and restart the nginx
I got 502 Bad Gateway

I found this line in /var/log/nginx/error.log :
'''
2015/06/24 14:10:46 [crit] 10227#0: *1 connect() to unix:/var/run/flask-uwsgi/flask-uwsgi.sock failed (13: Permission denied) while connecting to upstream, client: xx.xx.xx.xx, server: flask-uwsgi.yy.yy.yy.yy, request: "GET / HTTP/1.1", upstream: "uwsgi://unix:/var/run/flask-uwsgi/flask-uwsgi.sock:", host: "aliyun"
'''

xx.xx.xx.xx is the client ip
yy.yy.yy.yy is the server ip

Then I change the owner of /var/run/flask-uwsgi ( from root to user ), and change the mod of /var/run/flask-uwsgi ( even to 777 )
But nothing worked, I still got 502

So I'm not sure how to fix it, hope for your respons, thanks

---

Well, I fixed the permission problem, thanks for your tutorial~