Trac detected an internal error: KeyError: 3

[kenorb@…]

I've edited comment and when clicked on: (previous) it's throwing the error. "Last edited 18 minutes ago by kenorb (previous) (diff)" URL of that error: ​https://mytrac/projects/datagov/ticket/781?cversion=3&cnum_hist=5#comment:5 The second issue is that after comment 45 it starting to count it from comment 3, so there are some comment duplicates. If I edit the last one, I'm editing on of the first.

Python Traceback

Most recent call last: File "/var/www/trac/public_html/.egg-cache/Trac-0.12-py2.5.egg-tmp/trac/ticket/templates/ticket_change.html", line 59, in <Expression u'wiki_to_html(context, change.comment_history[int(cversion)].comment,\n escape_newlines=preserve_newlines)'>

System Information:

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_4) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/13.0.782.24 Safari/535.1

Trac 0.12 Genshi 0.6 mod_python 3.3.1 Pygments 0.10 pysqlite 2.4.1 Python 2.5.2 (r252:60911, Jan 24 2010, 15:24:24) [GCC 4.3.2] pytz 2008c setuptools 0.6c12 SQLite 3.5.9 Subversion 1.5.1 (r32289) jQuery 1.4.2 Enabled Plugins:

TracTags 0.6 /usr/lib/python2.5/site-packages/TracTags-0.6-py2.5.egg TracTicketChangesets 1.0dev-r9996 /usr/lib/python2.5/site-packages/TracTicketChangesets-1.0dev_r9996-py2.5.egg

[Remy Blank]

Replying to kenorb@…:

I've edited comment and when clicked on: (previous) it's throwing the error.

It looks like version 3 of the comment is missing from the database, or…

The second issue is that after comment 45 it starting to count it from comment 3, so there are some comment duplicates. If I edit the last one, I'm editing on of the first.

… or it's trying to find version 3 of the wrong comment. The bad comment numbering is a known issue. We have a fix on trunk that should solve the KeyError you experience when displaying the comment history, but the numbering issue is unsolved.

[kenorb@…]

Version 3 is not missing, because diff does work. URL: /projects/datagov/ticket/781?action=comment-diff&cnum=5&version=4

[anonymous]

URL: /projects/datagov/ticket/781?action=comment-history&cnum=5 When I do diff to any version, it's showing the difference. When I click '0', it's going to the correct page. /projects/datagov/ticket/781?cversion=0&cnum_hist=5#comment:5 When I click '1', '2', '3', '4', it's showing the error.

[anonymous]

Code fragment:

58	    <div py:otherwise="" py:choose="" class="comment searchable" xml:space="preserve">
59	      <py:when test="show_history">${wiki_to_html(context, change.comment_history[int(cversion)].comment,
60	                                                  escape_newlines=preserve_newlines)}</py:when>

[Remy Blank]

Thanks for the additional info. So we're trying to show diffs for the wrong comment. Do you have the possibility to upgrade to current trunk to see if the fix there corrects the symptom? Maybe in a test environment created as a clone of your current environment?

[anonymous]

No, I can't. Unfortunately I'm working on that environment only to the end of this week.

[Christian Boos]

Suggesting an upgrade to a later version … (0.12.3 will be out soon ;-) ).

That's about all we can do without more precise problem reproduction steps. Typically the problem that would require on-site debugging ;-)