restore option from the web-ui is not working

When you want to restore the backups in web-ui it is not working. After digging down in horizon error logs, I found error was with regexs. Here below is the log of my horzon:
 [Mon Feb 05 10:11:11.303467 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/openstack/venvs/horizon-15.1.7/lib/python2.7/site-packages/django/core/handlers/base.py", line 132, in get_response
[Mon Feb 05 10:11:11.303473 2018] [wsgi:error] [pid 14915:tid 140129324467968] response = wrapped_callback(request, *callback_args, **callback_kwargs)
[Mon Feb 05 10:11:11.303480 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/openstack/venvs/horizon-15.1.7/lib/python2.7/site-packages/horizon/decorators.py", line 36, in dec
[Mon Feb 05 10:11:11.303486 2018] [wsgi:error] [pid 14915:tid 140129324467968] return view_func(request, *args, **kwargs)
[Mon Feb 05 10:11:11.303492 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/openstack/venvs/horizon-15.1.7/lib/python2.7/site-packages/horizon/decorators.py", line 52, in dec
[Mon Feb 05 10:11:11.303497 2018] [wsgi:error] [pid 14915:tid 140129324467968] return view_func(request, *args, **kwargs)
[Mon Feb 05 10:11:11.303503 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/openstack/venvs/horizon-15.1.7/lib/python2.7/site-packages/horizon/decorators.py", line 36, in dec
[Mon Feb 05 10:11:11.303509 2018] [wsgi:error] [pid 14915:tid 140129324467968] return view_func(request, *args, **kwargs)
[Mon Feb 05 10:11:11.303514 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/openstack/venvs/horizon-15.1.7/lib/python2.7/site-packages/django/views/generic/base.py", line 71, in view
[Mon Feb 05 10:11:11.303521 2018] [wsgi:error] [pid 14915:tid 140129324467968] return self.dispatch(request, *args, **kwargs)
[Mon Feb 05 10:11:11.303527 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/openstack/venvs/horizon-15.1.7/lib/python2.7/site-packages/django/views/generic/base.py", line 89, in dispatch
[Mon Feb 05 10:11:11.303533 2018] [wsgi:error] [pid 14915:tid 140129324467968] return handler(request, *args, **kwargs)
[Mon Feb 05 10:11:11.303539 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/openstack/venvs/horizon-15.1.7/lib/python2.7/site-packages/horizon/workflows/views.py", line 199, in post
[Mon Feb 05 10:11:11.303548 2018] [wsgi:error] [pid 14915:tid 140129324467968] exceptions.handle(request)
[Mon Feb 05 10:11:11.303554 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/openstack/venvs/horizon-15.1.7/lib/python2.7/site-packages/horizon/exceptions.py", line 354, in handle
[Mon Feb 05 10:11:11.303575 2018] [wsgi:error] [pid 14915:tid 140129324467968] six.reraise(exc_type, exc_value, exc_traceback)
[Mon Feb 05 10:11:11.303581 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/openstack/venvs/horizon-15.1.7/lib/python2.7/site-packages/horizon/workflows/views.py", line 194, in post
[Mon Feb 05 10:11:11.303587 2018] [wsgi:error] [pid 14915:tid 140129324467968] success = workflow.finalize()
[Mon Feb 05 10:11:11.303592 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/openstack/venvs/horizon-15.1.7/lib/python2.7/site-packages/horizon/workflows/base.py", line 824, in finalize
[Mon Feb 05 10:11:11.303598 2018] [wsgi:error] [pid 14915:tid 140129324467968] if not self.handle(self.request, self.context):
[Mon Feb 05 10:11:11.303604 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/usr/local/lib/python2.7/dist-packages/disaster_recovery/backups/workflows/restore.py", line 67, in handle
[Mon Feb 05 10:11:11.303610 2018] [wsgi:error] [pid 14915:tid 140129324467968] exceptions.handle(request)
[Mon Feb 05 10:11:11.303616 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/openstack/venvs/horizon-15.1.7/lib/python2.7/site-packages/horizon/exceptions.py", line 354, in handle
[Mon Feb 05 10:11:11.303622 2018] [wsgi:error] [pid 14915:tid 140129324467968] six.reraise(exc_type, exc_value, exc_traceback)
[Mon Feb 05 10:11:11.303628 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/usr/local/lib/python2.7/dist-packages/disaster_recovery/backups/workflows/restore.py", line 65, in handle
[Mon Feb 05 10:11:11.303635 2018] [wsgi:error] [pid 14915:tid 140129324467968] return freezer_api.Backup(request).restore(data)
[Mon Feb 05 10:11:11.303641 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/usr/local/lib/python2.7/dist-packages/disaster_recovery/api/api.py", line 572, in restore
[Mon Feb 05 10:11:11.303647 2018] [wsgi:error] [pid 14915:tid 140129324467968] job_id = self.client.jobs.create(job)
[Mon Feb 05 10:11:11.303652 2018] [wsgi:error] [pid 14915:tid 140129324467968] File "/usr/local/lib/python2.7/dist-packages/freezerclient/v1/managers/jobs.py", line 42, in create
[Mon Feb 05 10:11:11.303658 2018] [wsgi:error] [pid 14915:tid 140129324467968] raise exceptions.ApiClientException(r)
[Mon Feb 05 10:11:11.303664 2018] [wsgi:error] [pid 14915:tid 140129324467968] ApiClientException: [*] Error 400: '' does not match '^[\\\\w-]+$'