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Unable to access /config when running under Python 3, throws exception. #1589

virtadpt opened this issue May 16, 2019 · 2 comments


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commented May 16, 2019

Hi. I'm trying to run Searx under Python 3 (v3.7.2).

When I try to look at the Searx server configuration by GETting the /config rail with cURL, wget, or my web browser, the server throws an HTTP 500 error. Searx throws the following exception on the console: on /config [GET]
Traceback (most recent call last):
  File "/Users/egrejda/searx/env/lib/python3.7/site-packages/flask/", line 2292, in wsgi_app
    response = self.full_dispatch_request()
  File "/Users/egrejda/searx/env/lib/python3.7/site-packages/flask/", line 1815, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/Users/egrejda/searx/env/lib/python3.7/site-packages/flask/", line 1718, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/Users/egrejda/searx/env/lib/python3.7/site-packages/flask/", line 35, in reraise
    raise value
  File "/Users/egrejda/searx/env/lib/python3.7/site-packages/flask/", line 1813, in full_dispatch_request
    rv = self.dispatch_request()
  File "/Users/egrejda/searx/env/lib/python3.7/site-packages/flask/", line 1799, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "searx/", line 875, in config
    'default_doi_resolver': settings['default_doi_resolver'],
  File "/Users/egrejda/searx/env/lib/python3.7/site-packages/flask/json/", line 321, in jsonify
    dumps(data, indent=indent, separators=separators) + '\n',
  File "/Users/egrejda/searx/env/lib/python3.7/site-packages/flask/json/", line 179, in dumps
    rv = _json.dumps(obj, **kwargs)
  File "/usr/local/Cellar/python/3.7.2_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/", line 238, in dumps
  File "/usr/local/Cellar/python/3.7.2_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/", line 199, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/local/Cellar/python/3.7.2_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/", line 257, in iterencode
    return _iterencode(o, 0)
  File "/Users/egrejda/searx/env/lib/python3.7/site-packages/flask/json/", line 81, in default
    return _json.JSONEncoder.default(self, o)
  File "/usr/local/Cellar/python/3.7.2_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/", line 179, in default
    raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type dict_keys is not JSON serializable
INFO:werkzeug: - - [16/May/2019 11:10:45] "GET /config HTTP/1.1" 500 -

I can load the Searx frontpage normally in a browser under Python 3, and it works as expected. Searx also seems to work just fine under Python 2; I routinely use it about a dozen times a day without trouble. The /config rail and the API work just fine with Python 2, also.

Reproduced on: Mac OSX v1.13.6, Arch Linux, Ubuntu v18.04.


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commented May 17, 2019

hi i made pr to fix this list. can you check if this fix your problem?


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commented May 17, 2019

I just cloned your repo and gave it a shot, and it does seem to fix the problem.

@kvch kvch closed this in #1590 Jun 24, 2019

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