Failed to activate second network interface

Rockstor version: 3.9.1-13

 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/storageadmin/views/network.py", line 379, in post
    network.toggle_connection(nco.uuid, switch)
  File "/opt/rockstor/src/rockstor/system/network.py", line 198, in toggle_connection
    return run_command([NMCLI, 'c', switch, uuid])
  File "/opt/rockstor/src/rockstor/system/osi.py", line 121, in run_command
    raise CommandException(cmd, out, err, rc)
CommandException: Error running a command. cmd = /usr/bin/nmcli c up 8e1ae638-d10d-47ac-b5d1-a3830d1e6551. rc = 4. stdout = ['']. stderr = ['Error: Connection activation failed: No suitable device found for this connection.', '']