KeyError: 'fields'

[carlos.migliavacca@…]

I got this when I did diff between changes in ticket.

How to Reproduce

While doing a GET operation on /ticket/19, Trac issued an internal error.

(please provide additional details here)

Request parameters:

{'action': u'diff', 'id': u'19', 'version': u'4'}

User Agent was: Mozilla/5.0 (Windows; U; Windows NT 5.1; pt-BR; rv:1.9.0.4) Gecko/2008102920 Firefox/3.0.4

System Information

Trac	0.11.1
Python	2.5.2 (r252:60911, Jul 31 2008, 17:49:46) [GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)]
setuptools	0.6c8
SQLite	3.4.2
pysqlite	2.4.0
Genshi	0.6dev-r960
mod_python	3.3.1
Subversion	1.5.1 (r32289)
jQuery:	1.2.6

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/Trac-0.11.1-py2.5.egg/trac/web/main.py", line 423, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.5/site-packages/Trac-0.11.1-py2.5.egg/trac/web/main.py", line 209, in dispatch
    self._post_process_request(req, *resp)
  File "/usr/lib/python2.5/site-packages/Trac-0.11.1-py2.5.egg/trac/web/main.py", line 299, in _post_process_request
    resp = f.post_process_request(req, *resp)
  File "build/bdist.linux-x86_64/egg/mastertickets/web_ui.py", line 64, in post_process_request
    for field, field_data in change['fields'].iteritems():
KeyError: 'fields'

[anonymous]

Solution at ticket #3920

[nkantrowitz]

Not sure who closed this, but it is a known (long-standing) bug in the mastertickets plugin.