unable to start pgAdmin-4 on CentOS-7

Hello Community,

I have an issue starting pgAdmin4 on CentOS-7 and would appreciate any help
in this regard -

I have downloaded the EnterpriseDB's Open Source PostgreSQL package (9.6
beta3) which includes pgAdmin4 as well.

When i tried starting the pgAdmin4, i get the following error -

[dba(at)localhost bin]$ ./pgAdmin4
Full Python path:
"/opt/PostgreSQL/9.6/pgAdmin4/venv/lib/python2.7/site-packages:/opt/PostgreSQL/9.6/pgAdmin4/venv/lib/python2.7/lib-dynload:/opt/PostgreSQL/9.6/pgAdmin4/venv/lib/python2.7"
User Python path: ""
Webapp path: "/opt/PostgreSQL/9.6/pgAdmin4/web/pgAdmin4.py"
Traceback (most recent call last):
File "/opt/PostgreSQL/9.6/pgAdmin4/web/pgAdmin4.py", line 23, in <module>
import config
File "/opt/PostgreSQL/9.6/pgAdmin4/web/config.py", line 15, in <module>
from logging import *
File
"/opt/PostgreSQL/9.6/pgAdmin4/venv/lib/python2.7/logging/__init__.py", line
26, in <module>
import sys, os, time, cStringIO, traceback, warnings, weakref,
collections
File "/opt/PostgreSQL/9.6/pgAdmin4/venv/lib/python2.7/collections.py",
line 9, in <module>
from operator import itemgetter as _itemgetter, eq as _eq
ImportError:
/opt/PostgreSQL/9.6/pgAdmin4/venv/lib/python2.7/lib-dynload/operator.so:
undefined symbol: _PyUnicodeUCS2_AsDefaultEncodedString
"Failed to launch the application server, server thread exiting."

Regards,
Venkata B N

Fujitsu Australia