Python3+uwsgi on Ubuntu 16.04. No module named 'encodings' - how to find out what's wrong?

Question

Python

Ubuntu 16.04, Python3, virtualenvwrapper, uwsgi. Python and uwsgi are standard system ones.
Error when starting the uwsgi service, key lines in the log -

Fatal Python error: Py_Initialize: Unable to get the locale encoding
ImportError: No module named 'encodings'

UPD!!!: Removed the line
home=/root/.virtualenvs/vek/bin/python
and everything worked. As a last resort, I will use Python's hologlobal environment, but what's the problem?
Wherever I didn’t dig, my thoughts ran out. What could be the problem and how to look for it at all (detail the logs, diagnose something else)?
All the key details, if something is missing - I will add.

# cat /etc/uwsgi/apps-enabled/vek.ini 
[uwsgi]
plugins=python3
chdir=/srv/vek/django
module=vek.wsgi:application
home=/root/.virtualenvs/vek/bin/python

# apt-get install uwsgi-plugin-python3 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
uwsgi-plugin-python3 is already the newest version (2.0.12-5ubuntu3).
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.

# cat /var/log/uwsgi/app/vek.log
...
Thu Jun 23 17:12:52 2016 - *** Starting uWSGI 2.0.12-debian (64bit) on [Thu Jun 23 17:12:51 2016] ***
Thu Jun 23 17:12:52 2016 - compiled with version: 5.3.1 20160412 on 13 April 2016 08:36:06
Thu Jun 23 17:12:52 2016 - os: Linux-4.4.0-24-generic #43-Ubuntu SMP Wed Jun 8 19:27:37 UTC 2016
Thu Jun 23 17:12:52 2016 - nodename: vek-dverey.ru
Thu Jun 23 17:12:52 2016 - machine: x86_64
Thu Jun 23 17:12:52 2016 - clock source: unix
Thu Jun 23 17:12:52 2016 - pcre jit disabled
Thu Jun 23 17:12:52 2016 - detected number of CPU cores: 1
Thu Jun 23 17:12:52 2016 - current working directory: /
Thu Jun 23 17:12:52 2016 - writing pidfile to /run/uwsgi/app/vek/pid
Thu Jun 23 17:12:52 2016 - detected binary path: /usr/bin/uwsgi-core
Thu Jun 23 17:12:52 2016 - setgid() to 33
Thu Jun 23 17:12:52 2016 - setuid() to 33
Thu Jun 23 17:12:52 2016 - chdir() to /srv/vek/django
Thu Jun 23 17:12:52 2016 - your processes number limit is 3912
Thu Jun 23 17:12:52 2016 - your memory page size is 4096 bytes
Thu Jun 23 17:12:52 2016 - detected max file descriptor number: 1024
Thu Jun 23 17:12:52 2016 - lock engine: pthread robust mutexes
Thu Jun 23 17:12:52 2016 - thunder lock: disabled (you can enable it with --thunder-lock)
Thu Jun 23 17:12:52 2016 - uwsgi socket 0 bound to UNIX address /run/uwsgi/app/vek/socket fd 3
Thu Jun 23 17:12:52 2016 - Python version: 3.5.1+ (default, Mar 30 2016, 22:46:26)  [GCC 5.3.1 20160330]
Thu Jun 23 17:12:52 2016 - Set PythonHome to /root/.virtualenvs/vek/bin/python
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ImportError: No module named 'encodings'

Current thread 0x00007f0abc3b7780 (most recent call first):

# /root/.virtualenvs/vek/bin/python 
Python 3.5.1+ (default, Mar 30 2016, 22:46:26) 
[GCC 5.3.1 20160330] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import encodings
>>> encodings
<module 'encodings' from '/root/.virtualenvs/vek/lib/python3.5/encodings/__init__.py'>
>>>

I suspect that some wrong Python is being used, but in the uwsgi log the version is correct
UPD: I checked the version of the wrong plugin naming:

# uwsgi<TAB key>
uwsgi           uwsgi-core      uwsgi_python3   uwsgi_python35

It can be seen that there are plugins uwsgi_python3 and uwsgi_python35. I tried to change the name of the plugin in ini to python35 - the log is absolutely the same.

Answer 1

Get a user
Get him a directory in / home
Put everything there
In uwsgi specify which user you need to run
To use plugins=python3you need to put uwsgi-plugin-python3

Answer 2

where did you remove the line
home=/root/.virtualenvs/vek/bin/python