[pgadmin-support] Bug: Error generating backup

Hello everyone, This error happens when a backup is generated: pgAdmin4-1.4

The window for showing the state of backup generation shows the text "Status Running..." all the time, never change to complet state, however the backup is generated correctly.

Steps for reproduce:

1. Generate backups

2. Click here for details when popups is "running…"

That trace is logged on the apache error log file:

[Mon Apr 17 10:08:47.397442 2017] [wsgi:warn] [pid 38847] mod_wsgi (pid=38847): Callback registration for signal 2 ignored.

[Mon Apr 17 10:08:47.439101 2017] [wsgi:warn] [pid 38847]   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1997, in __call__

[Mon Apr 17 10:08:47.439126 2017] [wsgi:warn] [pid 38847]     return self.wsgi_app(environ, start_response)

[Mon Apr 17 10:08:47.439134 2017] [wsgi:warn] [pid 38847]   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1982, in wsgi_app

[Mon Apr 17 10:08:47.439140 2017] [wsgi:warn] [pid 38847]     response = self.full_dispatch_request()

[Mon Apr 17 10:08:47.439147 2017] [wsgi:warn] [pid 38847]   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1612, in full_dispatch_request

[Mon Apr 17 10:08:47.439153 2017] [wsgi:warn] [pid 38847]     rv = self.dispatch_request()

[Mon Apr 17 10:08:47.439159 2017] [wsgi:warn] [pid 38847]   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1598, in dispatch_request

[Mon Apr 17 10:08:47.439165 2017] [wsgi:warn] [pid 38847]     return self.view_functions[rule.endpoint](**req.view_args)

[Mon Apr 17 10:08:47.439171 2017] [wsgi:warn] [pid 38847]   File "/usr/local/lib/python2.7/dist-packages/flask_login.py", line 792, in decorated_view

[Mon Apr 17 10:08:47.439177 2017] [wsgi:warn] [pid 38847]     return func(*args, **kwargs)

[Mon Apr 17 10:08:47.439183 2017] [wsgi:warn] [pid 38847]   File "/var/www/vhost/pgadmin4/web/pgadmin/tools/backup/__init__.py", line 452, in create_backup_objects_job

[Mon Apr 17 10:08:47.439189 2017] [wsgi:warn] [pid 38847]     p.start()

[Mon Apr 17 10:08:47.439195 2017] [wsgi:warn] [pid 38847]   File "/var/www/vhost/pgadmin4/web/pgadmin/misc/bgprocess/processes.py", line 335, in start

[Mon Apr 17 10:08:47.439201 2017] [wsgi:warn] [pid 38847]     preexec_fn=preexec_function, env=env

[Mon Apr 17 10:08:47.439207 2017] [wsgi:warn] [pid 38847]   File "/usr/lib/python2.7/subprocess.py", line 711, in __init__

[Mon Apr 17 10:08:47.439215 2017] [wsgi:warn] [pid 38847]     errread, errwrite)

[Mon Apr 17 10:08:47.439222 2017] [wsgi:warn] [pid 38847]   File "/usr/lib/python2.7/subprocess.py", line 1286, in _execute_child

[Mon Apr 17 10:08:47.439227 2017] [wsgi:warn] [pid 38847]     preexec_fn()

[Mon Apr 17 10:08:47.439233 2017] [wsgi:warn] [pid 38847]   File "/var/www/vhost/pgadmin4/web/pgadmin/misc/bgprocess/processes.py", line 331, in preexec_function

[Mon Apr 17 10:08:47.439239 2017] [wsgi:warn] [pid 38847]     signal.signal(signal.SIGINT, signal.SIG_IGN)

Regards.