Exception - Package (Template) is_installed

     Comment: An exception occurred in this state: Traceback (most recent call last):
                File "/usr/lib/python2.7/dist-packages/salt/state.py", line 1745, in call
                  **cdata['kwargs'])
                File "/usr/lib/python2.7/dist-packages/salt/loader.py", line 1702, in wrapper
                  return f(*args, **kwargs)
                File "/var/cache/salt/minion/extmods/states/salt_appng_package.py", line 56, in installed
                  if not __salt__['appngizer.is_installed'](**ldict):
                File "/var/cache/salt/minion/extmods/modules/salt-appngizer.py", line 196, in is_installed
                  return obj.is_installed(**xdict)
                File "/usr/lib/python2.7/dist-packages/appngizer/elements.py", line 964, in is_installed
                  raise appngizer.errors.ElementNotFound('Package {} is not available with {}'.format(self.name, filter))
              ElementNotFound: Package appng-template is not available with <built-in function filter>