AttributeError exception while generating code

[marco-a-itl]

Trying to generate code for flask with the following yaml file

https://forge.etsi.org/gitlab/mec/gs011-app-enablement-api/blob/master/Mp1.yaml

I get this exception:

[root@dev-local swagger_test]# swagger_py_codegen --swagger-doc Mp1.yaml -tlp flask mp1_flask
generate    mp1_flask/mp1_flask/exampleAPI_mp1_v1/schemas.py
Traceback (most recent call last):
  File "/src/var/mec/prova_venv/bin/swagger_py_codegen", line 10, in <module>
    sys.exit(generate())
  File "/src/var/mec/prova_venv/lib/python2.7/site-packages/click/core.py", line 722, in __call__
    return self.main(*args, **kwargs)
  File "/src/var/mec/prova_venv/lib/python2.7/site-packages/click/core.py", line 697, in main
    rv = self.invoke(ctx)
  File "/src/var/mec/prova_venv/lib/python2.7/site-packages/click/core.py", line 895, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/src/var/mec/prova_venv/lib/python2.7/site-packages/click/core.py", line 535, in invoke
    return callback(*args, **kwargs)
  File "/src/var/mec/prova_venv/lib/python2.7/site-packages/swagger_py_codegen/command.py", line 200, in generate
    for code in generator.generate():
  File "/src/var/mec/prova_venv/lib/python2.7/site-packages/swagger_py_codegen/base.py", line 47, in generate
    for code in self._process():
  File "/src/var/mec/prova_venv/lib/python2.7/site-packages/swagger_py_codegen/flask.py", line 203, in _process
    views = self._process_data()
  File "/src/var/mec/prova_venv/lib/python2.7/site-packages/swagger_py_codegen/flask.py", line 164, in _process_data
    url, params = _swagger_to_flask_url(swagger_path, data)
  File "/src/var/mec/prova_venv/lib/python2.7/site-packages/swagger_py_codegen/flask.py", line 81, in _swagger_to_flask_url
    for old, new in _type(param.get('parameters', [])):
AttributeError: 'list' object has no attribute 'get'