Trac 0.11.6 AttributeError: 'NoneType' object has no attribute 'startswith'

[Sam]

Environment

Trac:  	0.11.6
Python: 	2.4.3 (#1, Jun 11 2009, 14:09:37) [GCC 4.1.2 20080704 (Red Hat 4.1.2-44)]
setuptools: 	0.6c9
SQLite: 	3.3.6
pysqlite: 	2.5.1
Genshi: 	0.5.1
mod_python: 	3.2.8
Subversion: 	1.6.6 (r40053)
jQuery:	1.2.6

Error:
 Trac detected an internal error:

AttributeError: 'NoneType' object has no attribute 'startswith'


Python Traceback
Most recent call last:

    * File "/usr/lib/python2.4/site-packages/Trac-0.11.6-py2.4.egg/trac/web/main.py", line 450, in _dispatch_request
      Code fragment:
       445. try:
       446. if not env and env_error:
       447. raise HTTPInternalError(env_error)
       448. try:
       449. dispatcher = RequestDispatcher(env)
       450. dispatcher.dispatch(req)
       451. except RequestDone:
       452. pass
       453. resp = req._response or []
       454.  
       455. except HTTPException, e:
      Local variables:
      Name	Value
      after 	[u' except RequestDone:', u' pass', u' resp = ...
      before 	[u' try:', u' if not env and env_error:', u' raise ...
      dispatcher 	<trac.web.main.RequestDispatcher object at 0x2ae2397c3d50>
      e 	<exceptions.AttributeError instance at 0x2aaaacb15d88>
      env 	<trac.env.Environment object at 0x2ae2397b1210>
      env_error 	None
      exc_info 	(<class exceptions.AttributeError at 0x2ae23030c6b0>, ...
      filename 	'/usr/lib/python2.4/site-packages/Trac-0.11.6-py2.4.egg/trac/web/main.py'
      frames 	[{'function': '_dispatch_request', 'lines_before': [u' try:', u' ...
      has_admin 	True
      line 	u' dispatcher.dispatch(req)'
      lineno 	449
      message 	u"AttributeError: 'NoneType' object has no attribute 'startswith'"
      req 	<Request "GET u'/doxygen/'">
      resp 	[]
      tb 	<traceback object at 0x2aaaacb15dd0>
      tb_hide 	None
      traceback 	u'Traceback (most recent call last):\n File ...
    * File "/usr/lib/python2.4/site-packages/Trac-0.11.6-py2.4.egg/trac/web/main.py", line 206, in dispatch
      Code fragment:
       201. req.args.get('__FORM_TOKEN') != req.form_token:
       202. raise HTTPBadRequest('Missing or invalid form token. '
       203. 'Do you have cookies enabled?')
       204.  
       205. # Process the request and render the template
       206. resp = chosen_handler.process_request(req)
       207. if resp:
       208. if len(resp) == 2: # Clearsilver
       209. chrome.populate_hdf(req)
       210. template, content_type = \
       211. self._post_process_request(req, *resp)
      Local variables:
      Name	Value
      chosen_handler 	<doxygentrac.doxygentrac.DoxygenPlugin object at 0x2ae2397ce050>
      chrome 	<trac.web.chrome.Chrome object at 0x2ae2397c3650>
      err 	(<class exceptions.AttributeError at 0x2ae23030c6b0>, ...
      handler 	<doxygentrac.doxygentrac.DoxygenPlugin object at 0x2ae2397ce050>
      req 	<Request "GET u'/doxygen/'">
      self 	<trac.web.main.RequestDispatcher object at 0x2ae2397c3d50>
    * File "build/bdist.linux-x86_64/egg/doxygentrac/doxygentrac.py", line 159, in process_request
      Local variables:
      Name	Value
      action 	'index'
      link 	None
      path 	''
      req 	<Request "GET u'/doxygen/'">
      self 	<doxygentrac.doxygentrac.DoxygenPlugin object at 0x2ae2397ce050>
      wiki 	None
    * File "/usr/lib64/python2.4/posixpath.py", line 60, in join 

[anonymous]

same here !!!

[Alexander Dahl]

Same here on Debian Lenny with trac 0.11.7 from backports ​1 and r9251 from svn.

File "/usr/lib/python2.5/site-packages/trac/web/main.py", line 450, in _dispatch_request
  dispatcher.dispatch(req)
File "/usr/lib/python2.5/site-packages/trac/web/main.py", line 206, in dispatch
  resp = chosen_handler.process_request(req)
File "build/bdist.linux-i686/egg/doxygentrac/doxygentrac.py", line 159, in process_requestFile "/usr/lib/python2.5/posixpath.py", line 60, in join
  if b.startswith('/'):

System Information:

User Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.2.10) Gecko/20100914 Firefox/3.6.10
Trac:           0.11.7
Python:         2.5.2 (r252:60911, Jan 24 2010, 14:53:14) [GCC 4.3.2]
setuptools:     0.6c8
SQLite:         3.5.9
pysqlite:       2.4.1
Genshi:         0.5.1
Pygments:       0.10
Mercurial:      1.3.1
jQuery:         1.2.6

[macjoost@…]

Same for Trac 0.12

I think I found the solution ("works for me")

The 'html_output' option for DoxygenPlugin defaults to None in doxygentrac.py line 50. I changed that to '' (empty string) and everything worked again!

[Alexander Dahl]

This fix works for me too with Debian Squeeze (stable) and Doxygen Plugin r9996 doxygenplugin/0.11​.