OperationalError: (1170, "BLOB/TEXT column 'date' used in key specification without a key length")

[waka@…]

How to Reproduce

While doing a POST operation on /admin/ganttcalendar/holiday, Trac issued an internal error.

(please provide additional details here) package is localized as japanese version 0.11.2,

Request parameters:

{'__FORM_TOKEN': u'94d19862eb4d4c9795a79c0c',
 'cat_id': u'ganttcalendar',
 'create_table': u'\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3057\u3001\u3044\u304f\u3064\u304b\u306e\u795d\u65e5\u3092\u8a2d\u5b9a\u3057\u307e\u3059',
 'panel_id': u'holiday',
 'path_info': None}

User Agent was: Mozilla/5.0 (X11; U; Linux x86_64; ja; rv:1.9.0.6) Gecko/2009020410 Fedora/3.0.6-1.fc10 Firefox/3.0.6

System Information

Trac	0.11.2.1.ja1
Python	2.4.3 (#1, May 24 2008, 13:47:28) [GCC 4.1.2 20070626 (Red Hat 4.1.2-14)]
setuptools	0.6c7
MySQL	server: "5.0.45", client: "5.0.45", thread-safe: 0
MySQLdb	1.2.1
Genshi	0.5.1
mod_python	3.2.8
Mercurial	1.0
jQuery:	1.2.6

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/Trac-0.11.2.1.ja1-py2.4.egg/trac/web/main.py", line 432, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.2.1.ja1-py2.4.egg/trac/web/main.py", line 204, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.2.1.ja1-py2.4.egg/trac/admin/web_ui.py", line 113, in process_request
    path_info)
  File "build/bdist.linux-i686/egg/ganttcalendar/admin.py", line 57, in render_admin_panel
  File "/usr/lib/python2.4/site-packages/Trac-0.11.2.1.ja1-py2.4.egg/trac/db/util.py", line 51, in execute
    return self.cursor.execute(sql)
  File "/usr/lib/python2.4/site-packages/MySQLdb/cursors.py", line 163, in execute
    self.errorhandler(self, exc, value)
  File "/usr/lib/python2.4/site-packages/MySQLdb/connections.py", line 35, in defaulterrorhandler
    raise errorclass, errorvalue
OperationalError: (1170, "BLOB/TEXT column 'date' used in key specification without a key length")

[Emmanuel Blot]

This error is due to the Gantt plugin. Please report the error to the plugin maintainer