Error running a command. cmd = /usr/bin/net ads workgroup. rc = 255. stdout = ['']. stderr = ['ads_connect: No logon servers', 'ads_connect: No logon servers', "Didn't find the cldap server!", '']

Bugs
1 
        Traceback (most recent call last):

File “/opt/rockstor/src/rockstor/rest_framework_custom/generic_view.py”, line 41, in _handle_exception
yield
File “/opt/rockstor/src/rockstor/smart_manager/views/active_directory.py”, line 224, in post
method=method)
File “/opt/rockstor/src/rockstor/smart_manager/views/active_directory.py”, line 85, in _domain_workgroup
o, e, rc = run_command(cmd)
File “/opt/rockstor/src/rockstor/system/osi.py”, line 115, in run_command
raise CommandException(cmd, out, err, rc)
CommandException: Error running a command. cmd = /usr/bin/net ads workgroup. rc = 255. stdout = [’’]. stderr = [‘ads_connect: No logon servers’, ‘ads_connect: No logon servers’, “Didn’t find the cldap server!”, ‘’]