2019-06-25 15:06:28,768: ERROR	flask.app:	404 Not Found: The requested URL was not found on the server.  If you entered the URL manually please check your spelling and try again.
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/flask/app.py", line 1813, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/lib/python3/dist-packages/flask/app.py", line 1791, in dispatch_request
    self.raise_routing_exception(req)
  File "/usr/lib/python3/dist-packages/flask/app.py", line 1774, in raise_routing_exception
    raise request.routing_exception
  File "/usr/lib/python3/dist-packages/flask/ctx.py", line 336, in match_request
    self.url_adapter.match(return_rule=True)
  File "/usr/lib/python3/dist-packages/werkzeug/routing.py", line 1581, in match
    raise NotFound()
werkzeug.exceptions.NotFound: 404 Not Found: The requested URL was not found on the server.  If you entered the URL manually please check your spelling and try again.
2019-06-25 15:06:45,933: ERROR	flask.app:	[Errno 2] No such file or directory: 'python': 'python'
Traceback (most recent call last):
  File "/usr/share/pgadmin4/web/pgadmin/tools/backup/__init__.py", line 468, in create_backup_objects_job
    p.start()
  File "/usr/share/pgadmin4/web/pgadmin/misc/bgprocess/processes.py", line 387, in start
    preexec_fn=preexec_function, env=env
  File "/usr/lib/python3.7/subprocess.py", line 775, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.7/subprocess.py", line 1522, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'python': 'python'