Cant browse servers after update to pgadmin 1.6 (server version)

package pgadmin4-v1-web.noarch                  1.6-2.rhel7
After update of the above package from 1.5  I now see no nodes in the browser column soI cant do anything.

sample of my error log

[Wed Jul 19 12:31:13.159426 2017] [:error] [pid 1428] URLError: <urlopen error [Errno 101] Network is unreachable>
[Wed Jul 19 12:31:15.904561 2017] [:error] [pid 1428] 2017-07-19 12:31:15,904: ERROR\tpgadmin:\tException when checking
forupdate 
[Wed Jul 19 12:31:15.904576 2017] [:error] [pid 1428] Traceback (most recent call last):
[Wed Jul 19 12:31:15.904579 2017] [:error] [pid 1428]   File
"/usr/lib/python2.7/site-packages/pgadmin4-web/pgadmin/browser/__init__.py",line 482, in index 
[Wed Jul 19 12:31:15.904582 2017] [:error] [pid 1428]     response = urlreq.urlopen(url, data, 5)
[Wed Jul 19 12:31:15.904584 2017] [:error] [pid 1428]   File "/usr/lib64/python2.7/urllib2.py", line 154, in urlopen
[Wed Jul 19 12:31:15.904587 2017] [:error] [pid 1428]     return opener.open(url, data, timeout)
[Wed Jul 19 12:31:15.904589 2017] [:error] [pid 1428]   File "/usr/lib64/python2.7/urllib2.py", line 431, in open
[Wed Jul 19 12:31:15.904591 2017] [:error] [pid 1428]     response = self._open(req, data)
[Wed Jul 19 12:31:15.904594 2017] [:error] [pid 1428]   File "/usr/lib64/python2.7/urllib2.py", line 449, in _open
[Wed Jul 19 12:31:15.904596 2017] [:error] [pid 1428]     '_open', req)
[Wed Jul 19 12:31:15.904599 2017] [:error] [pid 1428]   File "/usr/lib64/python2.7/urllib2.py", line 409, in
_call_chain
[Wed Jul 19 12:31:15.904617 2017] [:error] [pid 1428]     result = func(*args)
[Wed Jul 19 12:31:15.904620 2017] [:error] [pid 1428]   File "/usr/lib64/python2.7/urllib2.py", line 1258, in
https_open
[Wed Jul 19 12:31:15.904622 2017] [:error] [pid 1428]     context=self._context, check_hostname=self._check_hostname)
[Wed Jul 19 12:31:15.904625 2017] [:error] [pid 1428]   File "/usr/lib64/python2.7/urllib2.py", line 1214, in do_open
[Wed Jul 19 12:31:15.904627 2017] [:error] [pid 1428]     raise URLError(err)
[Wed Jul 19 12:31:15.904629 2017] [:error] [pid 1428] URLError: <urlopen error [Errno 101] Network is unreachable>