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[Liyingjun <yingjun.li@xxxxxxxxxxxxxxx>]

Public bug reported:

When accessing images page, the following error raised:
error invoking apiclient
Traceback (most recent call last):
  File "/opt/stack/horizon/openstack_dashboard/api/rest/utils.py", line 131, in _wrapped
    return JSONResponse(data, json_encoder=json_encoder)
  File "/opt/stack/horizon/openstack_dashboard/api/rest/utils.py", line 67, in __init__
    cls=json_encoder)
  File "/usr/local/lib/python2.7/dist-packages/oslo_serialization/jsonutils.py", line 190, in dumps
    return json.dumps(obj, default=default, **kwargs)
  File "/usr/lib/python2.7/json/__init__.py", line 250, in dumps
    sort_keys=sort_keys, **kw).encode(obj)
  File "/usr/lib/python2.7/json/encoder.py", line 209, in encode
    chunks = list(chunks)
  File "/usr/lib/python2.7/json/encoder.py", line 434, in _iterencode
    for chunk in _iterencode_dict(o, _current_indent_level):
  File "/usr/lib/python2.7/json/encoder.py", line 408, in _iterencode_dict
    for chunk in chunks:
  File "/usr/lib/python2.7/json/encoder.py", line 443, in _iterencode
    for chunk in _iterencode(o, _current_indent_level):
  File "/usr/lib/python2.7/json/encoder.py", line 440, in _iterencode
    raise ValueError("Circular reference detected")
ValueError: Circular reference detected

** Affects: horizon
     Importance: Undecided
     Assignee: Liyingjun (liyingjun)
         Status: New

** Changed in: horizon
     Assignee: (unassigned) => Liyingjun (liyingjun)

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https://bugs.launchpad.net/bugs/1672291

Title:
  Error: Unable to get the Glance service version.

Status in OpenStack Dashboard (Horizon):
  New

Bug description:
  When accessing images page, the following error raised:
  error invoking apiclient
  Traceback (most recent call last):
    File "/opt/stack/horizon/openstack_dashboard/api/rest/utils.py", line 131, in _wrapped
      return JSONResponse(data, json_encoder=json_encoder)
    File "/opt/stack/horizon/openstack_dashboard/api/rest/utils.py", line 67, in __init__
      cls=json_encoder)
    File "/usr/local/lib/python2.7/dist-packages/oslo_serialization/jsonutils.py", line 190, in dumps
      return json.dumps(obj, default=default, **kwargs)
    File "/usr/lib/python2.7/json/__init__.py", line 250, in dumps
      sort_keys=sort_keys, **kw).encode(obj)
    File "/usr/lib/python2.7/json/encoder.py", line 209, in encode
      chunks = list(chunks)
    File "/usr/lib/python2.7/json/encoder.py", line 434, in _iterencode
      for chunk in _iterencode_dict(o, _current_indent_level):
    File "/usr/lib/python2.7/json/encoder.py", line 408, in _iterencode_dict
      for chunk in chunks:
    File "/usr/lib/python2.7/json/encoder.py", line 443, in _iterencode
      for chunk in _iterencode(o, _current_indent_level):
    File "/usr/lib/python2.7/json/encoder.py", line 440, in _iterencode
      raise ValueError("Circular reference detected")
  ValueError: Circular reference detected

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