Opennebula VM provisioning fails :"There was a query error: ‘NoneType’ object is not iterable.

salt cloud returns an error and is not able to provision VMs. I am using Opennebula for provisioning. This issue happens intermittently.

+ sudo /usr/bin/salt-cloud -m /etc/salt/cloud.maps.d/265-3set.conf -P -y
[WARNING ] Failed auth for mech NEGOEX (1.3.6.1.4.1.311.2.2.30): Mech Type 1.3.6.1.4.1.311.2.2.30 is not yet supported
[WARNING ] Failed auth for mech NEGOEX (1.3.6.1.4.1.311.2.2.30): Mech Type 1.3.6.1.4.1.311.2.2.30 is not yet supported
[WARNING ] Failed auth for mech NEGOEX (1.3.6.1.4.1.311.2.2.30): Mech Type 1.3.6.1.4.1.311.2.2.30 is not yet supported
[WARNING ] Failed auth for mech KRB5 (1.2.840.113554.1.2.2): Failed to acquire GSSAPI credential with password: Major (131072): An invalid name was supplied, Minor (2529639136): Configuration file does not specify default realm
[WARNING ] Failed auth for mech KRB5_U2U (1.2.840.113554.1.2.2.3): Mech Type 1.2.840.113554.1.2.2.3 is not yet supported
[WARNING ] Main pipe PAExec-31073-arc-selfserve.lab.ppops.net.exe does not exist yet on attempt 1. Trying again in 5 seconds
[WARNING ] Failed auth for mech NEGOEX (1.3.6.1.4.1.311.2.2.30): Mech Type 1.3.6.1.4.1.311.2.2.30 is not yet supported
[WARNING ] Failed auth for mech KRB5 (1.2.840.113554.1.2.2): Failed to acquire GSSAPI credential with password: Major (131072): An invalid name was supplied, Minor (2529639136): Configuration file does not specify default realm
[WARNING ] Failed auth for mech KRB5_U2U (1.2.840.113554.1.2.2.3): Mech Type 1.2.840.113554.1.2.2.3 is not yet supported
[WARNING ] Failed auth for mech NEGOEX (1.3.6.1.4.1.311.2.2.30): Mech Type 1.3.6.1.4.1.311.2.2.30 is not yet supported
[WARNING ] Failed auth for mech NEGOEX (1.3.6.1.4.1.311.2.2.30): Mech Type 1.3.6.1.4.1.311.2.2.30 is not yet supported
[WARNING ] Failed auth for mech KRB5 (1.2.840.113554.1.2.2): Failed to acquire GSSAPI credential with password: Major (131072): An invalid name was supplied, Minor (2529639136): Configuration file does not specify default realm
[WARNING ] Failed auth for mech KRB5_U2U (1.2.840.113554.1.2.2.3): Mech Type 1.2.840.113554.1.2.2.3 is not yet supported
[WARNING ] Failed auth for mech NEGOEX (1.3.6.1.4.1.311.2.2.30): Mech Type 1.3.6.1.4.1.311.2.2.30 is not yet supported
[WARNING ] Failed auth for mech KRB5 (1.2.840.113554.1.2.2): Failed to acquire GSSAPI credential with password: Major (131072): An invalid name was supplied, Minor (2529639136): Configuration file does not specify default realm
[WARNING ] Failed auth for mech KRB5_U2U (1.2.840.113554.1.2.2.3): Mech Type 1.2.840.113554.1.2.2.3 is not yet supported
[WARNING ] Failed auth for mech NEGOEX (1.3.6.1.4.1.311.2.2.30): Mech Type 1.3.6.1.4.1.311.2.2.30 is not yet supported
[WARNING ] Failed auth for mech KRB5 (1.2.840.113554.1.2.2): Failed to acquire GSSAPI credential with password: Major (131072): An invalid name was supplied, Minor (2529639136): Configuration file does not specify default realm
[WARNING ] Failed auth for mech KRB5_U2U (1.2.840.113554.1.2.2.3): Mech Type 1.2.840.113554.1.2.2.3 is not yet supported
[ERROR   ] There was a query error: 'NoneType' object is not iterable

Salt Version:
           Salt: 2019.2.2

Dependency Versions:
           cffi: 1.13.1
       cherrypy: unknown
       dateutil: Not Installed
      docker-py: Not Installed
          gitdb: 2.0.6
      gitpython: Not Installed
          ioflo: Not Installed
         Jinja2: 2.10.3
        libgit2: Not Installed
        libnacl: Not Installed
       M2Crypto: Not Installed
           Mako: 1.1.0
   msgpack-pure: Not Installed
 msgpack-python: 0.5.6
   mysql-python: Not Installed
      pycparser: Not Installed
       pycrypto: 2.6.1
   pycryptodome: Not Installed
         pygit2: Not Installed
         Python: 2.7.5 (default, Aug  7 2019, 00:51:29)
   python-gnupg: Not Installed
         PyYAML: 3.11
          PyZMQ: 15.3.0
           RAET: Not Installed
          smmap: 2.0.5
        timelib: Not Installed
        Tornado: 4.2.1
            ZMQ: 4.1.4

System Versions:
           dist: centos 7.6.1810 Core
         locale: UTF-8
        machine: x86_64
        release: 3.10.0-957.5.1.el7.x86_64
         system: Linux
        version: CentOS Linux 7.6.1810 Core

Start by reproducing the documented salt-cloud command with /etc/salt/cloud.maps.d/265-3set.conf and separate the OpenNebula provisioning failure from the authentication warnings. Trace the salt-cloud provider path that emits the 'NoneType' query error; done means the intermittent failure is explained and a regression test covers the corrected behavior.