Internal Server Error if ti cannot connect to the Cluster

[Andres Rodriguez]

While the cluster was disconnected, I tried to change it from Enabled to Disable and an "Internal Server Error" was shown:

=> /var/log/maas/regiond.log <==
     return func(*args, **kwargs)
   File "/usr/lib/python2.7/dist-packages/maasserver/utils/async.py", line 180, in fire
     self._fire_in_reactor(hook).wait()
   File "/usr/lib/python2.7/dist-packages/crochet/_eventloop.py", line 219, in wait
     result.raiseException()
   File "<string>", line 2, in raiseException

 provisioningserver.rpc.exceptions.NoConnectionsAvailable: Unable to connect to cluster a7f0d619-63eb-4460-9e27-71c79561c0a0; no connections available.

[Andres Rodriguez (andreserl)]

We believe that this is not longer an issue in the latest releases of MAAS. If you believe this is still an issue, please re-open this bug report and target it accordingly.