How to identify what JSON key is wrong or missing?

Problem

I am using this tool to convert the augmented K8s openAPI schema to JSONSchema. But it fails for me without saying what JSON key is missing.

Background

I am working on a project Kedge which is easier way of definig k8s artifacts. So we have created structs which are embedding Kubernetes structs from upstream. Now I wanted to create OpenAPI schema for Kedge. So I am reading our Kedge spec and augmenting our information into existing k8s openAPI schema. But it seems like some JSON keys are mis-matching but I cannot see which keys are mis-matching with use of this tool.

Running

$ mkdir -p configs
$ openapi2jsonschema output.json -o configs/ --stand-alone
Downloading schema
Parsing schema
Generating shared definitions
Generating individual schemas
Generating nonresourceattributes.json
...

Generating deploymentspec.json
Traceback (most recent call last):
  File "/usr/local/bin/openapi2jsonschema", line 11, in <module>
    load_entry_point('openapi2jsonschema', 'console_scripts', 'openapi2jsonschema')()
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 722, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 697, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 895, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 535, in invoke
    return callback(*args, **kwargs)
  File "/src/openapi2jsonschema/command.py", line 154, in default
    schema_file.write(json.dumps(specification, indent=2))
  File "/usr/local/lib/python2.7/json/__init__.py", line 251, in dumps
    sort_keys=sort_keys, **kw).encode(obj)
  File "/usr/local/lib/python2.7/json/encoder.py", line 209, in encode
    chunks = list(chunks)
  File "/usr/local/lib/python2.7/json/encoder.py", line 434, in _iterencode
    for chunk in _iterencode_dict(o, _current_indent_level):
  File "/usr/local/lib/python2.7/json/encoder.py", line 408, in _iterencode_dict
    for chunk in chunks:
  File "/usr/local/lib/python2.7/json/encoder.py", line 408, in _iterencode_dict
    for chunk in chunks:
  File "/usr/local/lib/python2.7/json/encoder.py", line 408, in _iterencode_dict
    for chunk in chunks:
  File "/usr/local/lib/python2.7/json/encoder.py", line 442, in _iterencode
    o = _default(o)
  File "/usr/local/lib/python2.7/json/encoder.py", line 184, in default
    raise TypeError(repr(o) + " is not JSON serializable")
  File "/usr/local/lib/python2.7/site-packages/proxytypes.py", line 91, in wrapper
    return method(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/jsonref.py", line 212, in __repr__
    return repr(self.__subject__)
  File "/usr/local/lib/python2.7/site-packages/proxytypes.py", line 131, in __getattribute__
    return _oga(self, attr)
  File "/usr/local/lib/python2.7/site-packages/proxytypes.py", line 91, in wrapper
    return method(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/proxytypes.py", line 209, in __subject__
    self.cache = super(LazyProxy, self).__subject__
  File "/usr/local/lib/python2.7/site-packages/proxytypes.py", line 91, in wrapper
    return method(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/proxytypes.py", line 195, in __subject__
    return self.callback()
  File "/usr/local/lib/python2.7/site-packages/proxytypes.py", line 91, in wrapper
    return method(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/jsonref.py", line 159, in callback
    result = self.resolve_pointer(self.store[uri], fragment)
  File "/usr/local/lib/python2.7/site-packages/proxytypes.py", line 91, in wrapper
    return method(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/jsonref.py", line 197, in resolve_pointer
    self._error("Unresolvable JSON pointer: %r" % pointer, cause=e)
  File "/usr/local/lib/python2.7/site-packages/proxytypes.py", line 91, in wrapper
    return method(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/jsonref.py", line 207, in _error
    cause=cause
jsonref.JsonRefError

Full log at: http://pastebin.centos.org/235096/

instrumenta / openapi2jsonschema