File "/usr/lib/python2.7/site-packages/Trac-1.0.1-py2.7.egg/trac/web/main.py", line 497, in _dispatch_request
dispatcher.dispatch(req)
File "/usr/lib/python2.7/site-packages/Trac-1.0.1-py2.7.egg/trac/web/main.py", line 214, in dispatch
resp = chosen_handler.process_request(req)
File "build/bdist.linux-i686/egg/ganttcalendar/ticketgantt.py", line 496, in process_request
any(f['name'] == sorted_field and f['custom'] for f in fields):
File "build/bdist.linux-i686/egg/ganttcalendar/ticketgantt.py", line 496, in <genexpr>
any(f['name'] == sorted_field and f['custom'] for f in fields):
jun66j5 
8月30日付の更新をレポジトリから持って来てTrac1.0.1に導入したところ，
というエラーが出ました．Pythonは不得手なので，もし対応可能でしたらお願いいたします．
参考までに当方の環境を併記いたします．
Trac 1.0.1
Babel 0.9.6
Docutils 0.11
FullBlog 0.1.1
Genshi 0.6 (without speedups)
GIT 1.8.2.1
mod_wsgi 3.4 (WSGIProcessGroup WSGIApplicationGroup %{GLOBAL})
Pygments 1.6
pysqlite 2.6.0
Python 2.7.1 (r271:86832, Jan 29 2011, 16:43:26) 4.1.2 20080704 (Red Hat 4.1.2-48)
pytz 2013.8
RPC 1.1.2-r13776
setuptools 2.0.1
SQLite 3.3.6
Subversion 1.7.5 (r1336830)
jQuery 1.7.2