Hello... just ran into an issue after what I thought was a successful routine update to mailman 2.1.36 (from .29? iirc) on Friday. Everything seemed fine after the update (following the config/make/make install) and I hadn't had occasion to log into the admin interface until today when I hit this (apparent) bug. Mail is being received and delivered just fine. The subscriber interface appears working. Simply trying to log into the Admindb user interface... entered my password and receive "Bug in Mailman version 2.1.36 We're sorry, we hit a bug!" Don't see any obvious permissions errors, nor does check_perms return anything. Below is the log output from Mailman error log. Nothing interesting in the httpd log. Thanks for any pointers! Nov 15 15:30:58 2021 admin(30830): @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ admin(30830): [----- Mailman Version: 2.1.36 -----] admin(30830): [----- Traceback ------] admin(30830): Traceback (most recent call last): admin(30830): File "/usr/local/mailman/scripts/driver", line 117, in run_main admin(30830): main() admin(30830): File "/usr/local/mailman/Mailman/Cgi/admindb.py", line 342, in main admin(30830): print doc.Format() admin(30830): File "/usr/local/mailman/Mailman/htmlformat.py", line 352, in Format admin(30830): output.append(Container.Format(self, indent)) admin(30830): File "/usr/local/mailman/Mailman/htmlformat.py", line 267, in Format admin(30830): output.append(HTMLFormatObject(item, indent)) admin(30830): File "/usr/local/mailman/Mailman/htmlformat.py", line 53, in HTMLFormatObject admin(30830): return item.Format(indent) admin(30830): File "/usr/local/mailman/Mailman/htmlformat.py", line 445, in Format admin(30830): % csrf_token(self.mlist, self.contexts, self.user) admin(30830): File "/usr/local/mailman/Mailman/CSRFcheck.py", line 53, in csrf_token admin(30830): mac = sha_new(secret + issued).hexdigest() admin(30830): TypeError: unsupported operand type(s) for +: 'NoneType' and 'str' admin(30830): [----- Python Information -----] admin(30830): sys.version = 2.7.5 (default, Aug 13 2020, 02:51:10) [GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] admin(30830): sys.executable = /usr/bin/python admin(30830): sys.prefix = /usr admin(30830): sys.exec_prefix = /usr admin(30830): sys.path = ['/usr/local/mailman/pythonlib', '/usr/local/mailman', '/usr/local/mailman/scripts', '/usr/lib64/python27.zip', '/usr/lib64/python2.7', '/usr/lib64/python2.7/plat-linux2', '/usr/lib64/python2.7/lib-tk', '/usr/lib64/python2.7/lib-old', '/usr/lib64/python2.7/lib-dynload', '/usr/lib/python2.7/site-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib64/python2.7/site-packages', '/usr/lib64/python2.7/site-packages/gtk-2.0', '/usr/lib64/python2.7/site-packages', '/usr/lib/python2.7/site-packages', '/usr/lib/site-python'] admin(30830): sys.platform = linux2 admin(30830): [----- Environment Variables -----] admin(30830): CONTENT_LENGTH: 41 admin(30830): CONTENT_TYPE: application/x-www-form-urlencoded admin(30830): SERVER_NAME: list.listdomain.com admin(30830): REMOTE_ADDR: 67.253.227.163 admin(30830): PYTHONPATH: /usr/local/mailman admin(30830): REMOTE_PORT: 3777 admin(30830): REQUEST_SCHEME: http admin(30830): SCRIPT_NAME: /mailman/admindb admin(30830): REQUEST_METHOD: POST admin(30830): HTTP_HOST: list.list_domain.com admin(30830): PATH_INFO: /list_name admin(30830): SERVER_PORT: 80 admin(30830): SERVER_PROTOCOL: HTTP/1.1 admin(30830): QUERY_STRING: admin(30830): REQUEST_URI: /mailman/admindb/list_name admin(30830): HTTP_COOKIE: admin(30830): DOCUMENT_ROOT: /var/www/html/list.list_domain.com