IOError: [Errno 2] No such file or directory: u''

[admin]

How to Reproduce

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

(please provide additional details here)

Request parameters:

{'cat_id': u'subversion', 'panel_id': u'svnauthz', 'path_info': None}

User agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.10) Gecko/20101005 Fedora/3.6.10-1.fc14 Firefox/3.6.10

System Information

Trac	0.12.2
Babel	0.9.5
Genshi	0.6
mod_python	3.3.1
pysqlite	2.3.5
Python	2.7 (r27:82500, Sep 16 2010, 18:02:00) [GCC 4.5.1 20100907 (Red Hat 4.5.1-3)]
setuptools	0.6
SQLite	3.6.23.1
Subversion	1.6.16 (r1073529)
jQuery	1.4.2

Enabled Plugins

IniAdmin	0.2
SvnAuthzAdminPlugin	0.1.2.-Moved.to.Trac.0.11-
TracAccountManager	0.3dev-r9929
TracWysiwyg	0.12.0.3-r9676

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/Trac-0.12.2-py2.7.egg/trac/web/main.py", line 511, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.7/site-packages/Trac-0.12.2-py2.7.egg/trac/web/main.py", line 237, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/lib/python2.7/site-packages/Trac-0.12.2-py2.7.egg/trac/admin/web_ui.py", line 116, in process_request
    path_info)
  File "/usr/lib/python2.7/site-packages/SvnAuthzAdminPlugin-0.1.2._Moved.to.Trac.0.11_-py2.7.egg/svnauthz/admin_ui.py", line 52, in render_admin_panel
    self.authz = self._get_model();
  File "/usr/lib/python2.7/site-packages/SvnAuthzAdminPlugin-0.1.2._Moved.to.Trac.0.11_-py2.7.egg/svnauthz/admin_ui.py", line 389, in _get_model
    return r.read(self.authz_file)
  File "/usr/lib/python2.7/site-packages/SvnAuthzAdminPlugin-0.1.2._Moved.to.Trac.0.11_-py2.7.egg/svnauthz/io.py", line 10, in read
    fp = open(filename, "r")
IOError: [Errno 2] No such file or directory: u''

[Remy Blank]

PluginIssue (​th:SvnAuthzAdminPlugin).