cannot import name 'FileStorage' from 'werkzeug'

[guinslym]

I had this error using Docker

[root@li1975-241 dataverse-ddi-converter-tool]# docker run -p 8520:8520 dct_server
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/local/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/usr/src/app/dct_server/__main__.py", line 3, in <module>
    import connexion
  File "/usr/local/lib/python3.7/site-packages/connexion/__init__.py", line 3, in <module>
    from .apis import AbstractAPI  # NOQA
  File "/usr/local/lib/python3.7/site-packages/connexion/apis/__init__.py", line 1, in <module>
    from .abstract import AbstractAPI  # NOQA
  File "/usr/local/lib/python3.7/site-packages/connexion/apis/abstract.py", line 10, in <module>
    from ..operations import make_operation
  File "/usr/local/lib/python3.7/site-packages/connexion/operations/__init__.py", line 1, in <module>
    from .abstract import AbstractOperation  # noqa
  File "/usr/local/lib/python3.7/site-packages/connexion/operations/abstract.py", line 11, in <module>
    from ..decorators.response import ResponseValidator
  File "/usr/local/lib/python3.7/site-packages/connexion/decorators/response.py", line 12, in <module>
    from .validation import ResponseBodyValidator
  File "/usr/local/lib/python3.7/site-packages/connexion/decorators/validation.py", line 9, in <module>
    from werkzeug import FileStorage
ImportError: cannot import name 'FileStorage' from 'werkzeug' (/usr/local/lib/python3.7/site-packages/werkzeug/__init__.py)

[4tikhonov]

@ekoi, can you please take a look?