Rockstor-bootstrap taking forever

Running it manually returns the following:

BTRFS device scan complete
Error connecting to Rockstor. Is it running?
Exception occured while bootstrapping. This could be because rockstor.service is still starting up. will wait 2 seconds and try again. Exception: HTTPConnectionPool(host='127.0.0.1', port=8000): Max retries exceeded with url: /api/commands/bootstrap (Caused by <class 'httplib.BadStatusLine'>: '')
Error connecting to Rockstor. Is it running?
Exception occured while bootstrapping. This could be because rockstor.service is still starting up. will wait 2 seconds and try again. Exception: HTTPConnectionPool(host='127.0.0.1', port=8000): Max retries exceeded with url: /api/commands/bootstrap (Caused by <class 'httplib.BadStatusLine'>: '')
Error connecting to Rockstor. Is it running?
Exception occured while bootstrapping. This could be because rockstor.service is still starting up. will wait 2 seconds and try again. Exception: HTTPConnectionPool(host='127.0.0.1', port=8000): Max retries exceeded with url: /api/commands/bootstrap (Caused by <class 'httplib.BadStatusLine'>: '')

Looks like that rockstor.service is not booting up probably. I wonder why this output is not returned by the service.