NoneType' object has no attribute 'setdefault

[anonymous]

Trac 1.5.1 windows env + TracAccountManager-0.6.dev0

pip install https://trac-hacks.org/browser/accountmanagerplugin/trunk?format=zip

Conf:

acct_mgr.admin.* = enabled
acct_mgr.api.* = enabled
acct_mgr.db.sessionstore = disabled
acct_mgr.htfile.htdigeststore = disabled
acct_mgr.htfile.htpasswdstore = enabled
acct_mgr.http.* = disabled
acct_mgr.notification.* = disabled
acct_mgr.pwhash.* = disabled
acct_mgr.register.* = enabled
acct_mgr.svnserve.svnservepasswordstore = disabled
acct_mgr.web_ui.* = enabled
acct_mgr.web_ui.resetpwstore = disabled
trac.web.auth.loginmodule = enabled
acct_mgr.register.* = disabled

Error happens when i select users in left menu:

AttributeError: 'NoneType' object has no attribute 'setdefault'

Log:

2020-09-09 14:43:30,223 Trac[main] ERROR: [::1] Internal Server Error: <RequestWithSession "GET '/admin/accounts/users'">, referrer 'http://localhost/trac/timefiler/admin/general/plugin'
Traceback (most recent call last):
  File "build\bdist.win-amd64\egg\trac\web\main.py", line 612, in dispatch_request
    dispatcher.dispatch(req)
  File "build\bdist.win-amd64\egg\trac\web\main.py", line 264, in dispatch
    metadata.setdefault('iterable', chrome.use_chunked_encoding)
AttributeError: 'NoneType' object has no attribute 'setdefault'

[Ryan J Ollos]

Duplicate of #13720.

[Ryan J Ollos]

In 17867:

TracAccountManager 0.6dev: Trac 1.5dev is not yet supported

Refs #13720, #13881.