AttributeError: NullTranslationsBabel instance has no attribute 'isactive'

[admin]

How to Reproduce

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

(please provide additional details here)

Request parameters:

{}

User agent: Mozilla/5#0 #Windows NT 6#1; Trident/7#0; SLCC2; #NET CLR 2#0#50727; #NET CLR 3#5#30729; #NET CLR 3#0#30729; Media Center PC 6#0; InfoPath#2; #NET4#0C; #NET4#0E; rv:11#0# like Gecko

System Information

Trac	1#0#1
Babel	1#3
Genshi	0#7 #without speedups#
mod_python	3#3#1
pysqlite	2#4#1
Python	2#6#6 #r266:84292, May 1 2012, 13:52:17# ##br## #GCC 4#4#6 20110731 #Red Hat 4#4#6-3##
pytz	2014#4
setuptools	0#6c11
SQLite	3#6#20
jQuery	1#7#2

Enabled Plugins

Python Traceback

Traceback #most recent call last#:
  File "build/bdist#linux-x86_64/egg/trac/web/main#py", line 497, in _dispatch_request
    dispatcher#dispatch#req#
  File "build/bdist#linux-x86_64/egg/trac/web/main#py", line 179, in dispatch
    chosen_handler#
  File "build/bdist#linux-x86_64/egg/trac/web/main#py", line 325, in _pre_process_request
    chosen_handler = filter_.pre_process_request#req, chosen_handler#
  File "build/bdist.linux-x86_64/egg/trac/versioncontrol/api.py", line 340, in pre_process_request
    if is_default#reponame#:
  File "build/bdist.linux-x86_64/egg/trac/versioncontrol/api.py", line 34, in is_default
    return not reponame or reponame in #'#default#', _#'#default#'##
  File "build/bdist.linux-x86_64/egg/trac/util/translation.py", line 195, in gettext
    if not self.isactive:
  File "build/bdist.linux-x86_64/egg/trac/util/translation.py", line 190, in __getattr__
    return getattr#self.active, name#
AttributeError: NullTranslationsBabel instance has no attribute 'isactive'

[Jun Omae]

A duplicate of #10903, also that issue has been fixed in forthcoming Trac 1.0.2. Otherwise, please downgrade to Babel 0.9.6.