[MapProxy] Internal error with GetCapabilities WMS request

[Paul Czioska]

Hi,

the error seems to be caused by a change in Pythons tokenizer package (Python 3.6.7) when using MapProxy 1.11.0. 

There is already a fix available:
https://github.com/mapproxy/mapproxy/commit/81c84d47bbc77da324c36ca718fbca7dde1c1c66

After editing the four files it should work.

Note that obviously the issue occurs not only on Windows but also on Linux machines (in contrast to the heading).

Regards
Paul

-----Alkuperäinen viesti-----
Lähettäjä: MapProxy <mapproxy-bounces at lists.osgeo.org> Puolesta Peter Sykora
Lähetetty: sunnuntai 24. helmikuuta 2019 23.12
Vastaanottaja: mapproxy at lists.osgeo.org
Aihe: [MapProxy] Internal error with GetCapabilities WMS request

Hi,
I could successfully setup mapproxy with the default configuration on my server, except that I get an error accessing the capabilities document for WMS:
http://www.carto.net/mapproxy/service?REQUEST=GetCapabilities
I get the following errors:
2019-02-24 21:49:26,036 - CRITICAL - mapproxy.wsgiapp - fatal error in service for /service?REQUEST=GetCapabilities Traceback (most recent call last):
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/wsgiapp.py",
line 193, in __call__
     resp = self.handlers[handler_name].handle(req)
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/service/ows.py",
line 38, in handle
     return self.services[service].handle(req)
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/service/base.py",
line 30, in handle
     return handler(parsed_req)
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/service/wms.py",
line 196, in capabilities
     ).render(map_request)
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/service/wms.py",
line 516, in render
     return self._render_template(_map_request.capabilities_template)
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/service/wms.py",
line 531, in _render_template
     inspire_md=inspire_md,
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/util/ext/tempita/__init__.py",
line 167, in substitute
     result, defs, inherit = self._interpret(ns)
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/util/ext/tempita/__init__.py",
line 178, in _interpret
     self._interpret_codes(self._parsed, ns, out=parts, defs=defs)
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/util/ext/tempita/__init__.py",
line 206, in _interpret_codes
     self._interpret_code(item, ns, out, defs)
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/util/ext/tempita/__init__.py",
line 226, in _interpret_code
     base = self._eval(parts[0], ns, pos)
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/util/ext/tempita/__init__.py",
line 301, in _eval
     reraise((exc_info[0], e, exc_info[2]))
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/util/py.py",
line 40, in reraise
     raise exc.with_traceback(tb)
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/util/ext/tempita/__init__.py",
line 288, in _eval
     value = eval(code, self.default_namespace, ns)
   File "<string>", line 1, in <module>
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/util/ext/tempita/__init__.py",
line 519, in __call__
     values = self._parse_signature(args, kw)
   File
"/home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/util/ext/tempita/__init__.py",
line 562, in _parse_signature
     % ', '.join(repr(v) for v in args))
TypeError: Extra position arguments: True at line 169 column 3 in file /home/sykora/mapproxy/mapproxy/lib/python3.6/site-packages/mapproxy/service/templates/wms111capabilities.xml

The GetMap requests work fine, eg.: 
http://www.carto.net/mapproxy/service?LAYERS=osm&FORMAT=image%2Fjpeg&SRS=EPSG%3A3857&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&BBOX=-5256910.9372448,-3015410.0118901,11277947.021405,8725317.5327129&WIDTH=845&HEIGHT=600
Thanks in advance for any hints
Peter



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