"System can't find the file"

[jgoering@…]

How to Reproduce

While doing a GET operation on /depgraph/3300, Trac issued an internal error.

I simply set ticket 3300 as "blocked by" 3386. Then I tried to view the dependency graph from ticket 3300 and got this error. The translation of the error message is "the system can't find the file"

User Agent was: Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1

System Information

Trac	0.11.1
Python	2.4.4 (#71, Oct 18 2006, 08:34:43) [MSC v.1310 32 bit (Intel)]
setuptools	0.6c8
SQLite	3.3.6
pysqlite	2.3.2
Genshi	0.5.1
Subversion	1.4.2 (r22196)
jQuery:	1.2.6

Python Traceback

Traceback (most recent call last):
  File "c:\python24\lib\site-packages\Trac-0.11.1-py2.4.egg\trac\web\main.py", line 423, in _dispatch_request
    dispatcher.dispatch(req)
  File "c:\python24\lib\site-packages\Trac-0.11.1-py2.4.egg\trac\web\main.py", line 219, in dispatch
    data, content_type)
  File "c:\python24\lib\site-packages\Trac-0.11.1-py2.4.egg\trac\web\chrome.py", line 715, in render_template
    return stream.render(method, doctype=doctype)
  File "build\bdist.win32\egg\genshi\core.py", line 179, in render
  File "build\bdist.win32\egg\genshi\output.py", line 60, in encode
  File "build\bdist.win32\egg\genshi\output.py", line 311, in __call__
  File "build\bdist.win32\egg\genshi\output.py", line 753, in __call__
  File "build\bdist.win32\egg\genshi\output.py", line 592, in __call__
  File "build\bdist.win32\egg\genshi\output.py", line 698, in __call__
  File "build\bdist.win32\egg\genshi\output.py", line 532, in __call__
  File "build\bdist.win32\egg\genshi\core.py", line 283, in _ensure
  File "build\bdist.win32\egg\genshi\core.py", line 283, in _ensure
  File "c:\python24\lib\site-packages\Trac-0.11.1-py2.4.egg\trac\web\chrome.py", line 767, in _strip_accesskeys
    for kind, data, pos in stream:
  File "build\bdist.win32\egg\genshi\core.py", line 283, in _ensure
  File "c:\python24\lib\site-packages\Trac-0.11.1-py2.4.egg\trac\web\chrome.py", line 756, in _generate
    for kind, data, pos in stream:
  File "build\bdist.win32\egg\genshi\core.py", line 283, in _ensure
  File "build\bdist.win32\egg\genshi\template\base.py", line 569, in _include
  File "build\bdist.win32\egg\genshi\template\markup.py", line 298, in _match
  File "build\bdist.win32\egg\genshi\template\markup.py", line 298, in _match
  File "build\bdist.win32\egg\genshi\template\markup.py", line 245, in _match
  File "build\bdist.win32\egg\genshi\template\base.py", line 543, in _exec
  File "build\bdist.win32\egg\genshi\template\base.py", line 533, in _eval
  File "build\bdist.win32\egg\genshi\template\base.py", line 496, in _eval
  File "build\bdist.win32\egg\genshi\template\base.py", line 551, in _flatten
  File "build\bdist.win32\egg\genshi\core.py", line 283, in _ensure
  File "build\bdist.win32\egg\genshi\path.py", line 141, in _generate
  File "build\bdist.win32\egg\genshi\template\base.py", line 569, in _include
  File "build\bdist.win32\egg\genshi\template\markup.py", line 234, in _strip
  File "build\bdist.win32\egg\genshi\template\base.py", line 543, in _exec
  File "build\bdist.win32\egg\genshi\template\base.py", line 533, in _eval
  File "build\bdist.win32\egg\genshi\template\base.py", line 496, in _eval
  File "build\bdist.win32\egg\genshi\template\base.py", line 551, in _flatten
  File "build\bdist.win32\egg\genshi\core.py", line 283, in _ensure
  File "build\bdist.win32\egg\genshi\path.py", line 141, in _generate
  File "build\bdist.win32\egg\genshi\template\base.py", line 569, in _include
  File "build\bdist.win32\egg\genshi\template\markup.py", line 234, in _strip
  File "build\bdist.win32\egg\genshi\template\base.py", line 543, in _exec
  File "build\bdist.win32\egg\genshi\template\base.py", line 520, in _eval
  File "build\bdist.win32\egg\genshi\template\base.py", line 286, in _eval_expr
  File "build\bdist.win32\egg\genshi\template\eval.py", line 180, in evaluate
  File "C:\Dokumente und Einstellungen\Default User\Application Data\Python-Eggs\tracmastertickets-2.1.3-py2.4.egg-tmp\mastertickets\templates\depgraph.html", line 22, in <Expression u"Markup(graph_render('cmapx').decode('utf8'))">
    ${Markup(graph_render('cmapx').decode('utf8'))}
  File "c:\python24\lib\site-packages\Trac-0.11.1-py2.4.egg\trac\util\compat.py", line 133, in newfunc
    return func_(*(args + fargs), **dict(kwargs, **fkwargs))
  File "build\bdist.win32\egg\mastertickets\graphviz.py", line 129, in render
  File "C:\Python24\lib\subprocess.py", line 543, in __init__
    errread, errwrite)
  File "C:\Python24\lib\subprocess.py", line 706, in _execute_child
    startupinfo)
WindowsError: [Errno 2] Das System kann die angegebene Datei nicht finden

[jgoering@…]

OK, the good news is: I'm an idiot. :)

I had not installed Graphviz... (d'oh)

Bad news is: still doesn't work (d'oh!)

now I get:

Traceback (most recent call last):
  File "c:\python24\lib\site-packages\Trac-0.11.1-py2.4.egg\trac\web\api.py", line 339, in send_error
    'text/html')
  File "c:\python24\lib\site-packages\Trac-0.11.1-py2.4.egg\trac\web\chrome.py", line 715, in render_template
    return stream.render(method, doctype=doctype)
  File "build\bdist.win32\egg\genshi\core.py", line 179, in render
  File "build\bdist.win32\egg\genshi\output.py", line 60, in encode
  File "build\bdist.win32\egg\genshi\output.py", line 311, in __call__
  File "build\bdist.win32\egg\genshi\output.py", line 753, in __call__
  File "build\bdist.win32\egg\genshi\output.py", line 592, in __call__
  File "build\bdist.win32\egg\genshi\output.py", line 707, in __call__
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe4 in position 4142: ordinal not in range(128)

[jgoering@…]

good news: duplicate of #3449 and #2658