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

[paul_trac@…]

Hey guys,

I receive an error using the latest stable version (0.12.2) that I did not find back in already existing bug reports. I've put the traceback below.

The triggering link is: ​http://polarssl.org/trac/browser/branches/polarssl-0.10/visualc/rsa_pub.txt?rev=487

Python Traceback Most recent call last:

    File "/var/www/polarssl_trac/templates/browser.html", line 119, in <Expression u"wiki_to_html(context('changeset', file.changeset.rev), file.changeset.message, escape_newlines=True)">
    File "/usr/local/lib/python2.6/dist-packages/Trac-0.12.2-py2.6.egg/trac/wiki/formatter.py", line 1497, in format_to_html
    File "/usr/local/lib/python2.6/dist-packages/Trac-0.12.2-py2.6.egg/trac/wiki/formatter.py", line 1452, in generate
    File "/usr/local/lib/python2.6/dist-packages/Trac-0.12.2-py2.6.egg/trac/wiki/formatter.py", line 1240, in format
    File "/usr/lib/python2.6/re.py", line 151, in sub
    File "/usr/local/lib/python2.6/dist-packages/Trac-0.12.2-py2.6.egg/trac/wiki/formatter.py", line 1158, in replace
    File "/usr/local/lib/python2.6/dist-packages/Trac-0.12.2-py2.6.egg/trac/wiki/formatter.py", line 1151, in handle_match
    File "/usr/local/lib/python2.6/dist-packages/Trac-0.12.2-py2.6.egg/trac/versioncontrol/web_ui/log.py", line 330, in <lambda>
    File "/usr/local/lib/python2.6/dist-packages/Trac-0.12.2-py2.6.egg/trac/versioncontrol/web_ui/log.py", line 366, in _format_link
    File "/usr/local/lib/python2.6/dist-packages/Trac-0.12.2-py2.6.egg/trac/versioncontrol/api.py", line 563, in get_default_repository

System Information:

User Agent: Mozilla/5.0 (Windows NT 5.1; rv:2.0b11) Gecko/20100101 Firefox/4.0b11
Trac 	0.12.2
Genshi 	0.6
mod_wsgi 	3.3 (WSGIProcessGroup WSGIApplicationGroup %{GLOBAL})
Pygments 	1.4
pysqlite 	2.4.1
Python 	2.6.6 (r266:84292, Dec 26 2010, 22:48:11) [GCC 4.4.5]
pytz 	2010b
setuptools 	0.6
SQLite 	3.7.4
Subversion 	1.6.12 (r955767)
jQuery	1.4.2

[Christian Boos]

File "/var/www/polarssl_trac/templates/browser.html", line 119

This is a template coming from a previous version of Trac.

I didn't find an obvious and clear warning about the need to manually upgrade "customized" templates in TracUpgrade, only a short caveat in TracIni#GlobalConfiguration.

Keeping the ticket as a reminder to improve the doc.