[26/Jul/2020:20:19:03 +0530] "GET /3.1/lists/msgteam-hyd.lsmgr.nic.in HTTP/1.1" 200 375 "-" "GNU Mailman REST client v3                        .3.1"
[2020-07-26 20:19:03 +0530] [18034] [ERROR] Error handling request /3.1/lists/msgteam-hyd.lsmgr.nic.in/roster/owner
Traceback (most recent call last):
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/gunicorn-20.0.4-py3.6.egg/gunicorn/workers/sync.py", line                         134, in handle
    self.handle_request(listener, req, client, addr)
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/gunicorn-20.0.4-py3.6.egg/gunicorn/workers/sync.py", line                         175, in handle_request
    respiter = self.wsgi(environ, resp.start_response)
  File "/var/lib/mailman/mailman/src/mailman/database/transaction.py", line 50, in wrapper
    rtn = function(*args, **kws)
  File "/var/lib/mailman/mailman/src/mailman/rest/wsgiapp.py", line 193, in __call__
    return super().__call__(environ, start_response)
  File "falcon/api.py", line 274, in falcon.api.API.__call__
  File "falcon/api.py", line 269, in falcon.api.API.__call__
  File "/var/lib/mailman/mailman/src/mailman/rest/members.py", line 100, in on_get
    resource = self._make_collection(request)
  File "/var/lib/mailman/mailman/src/mailman/rest/helpers.py", line 172, in _make_collection
    for resource in collection]
  File "/var/lib/mailman/mailman/src/mailman/rest/helpers.py", line 172, in <listcomp>
    for resource in collection]
  File "/var/lib/mailman/mailman/src/mailman/rest/members.py", line 72, in _resource_as_dict
    if member.display_name is not None:
  File "/var/lib/mailman/mailman/src/mailman/model/member.py", line 158, in display_name
    elif self.user is not None and self.user.display_name:
  File "/var/lib/mailman/mailman/src/mailman/model/member.py", line 142, in user
    else getUtility(IUserManager).get_user(self._address.email))
  File "/var/lib/mailman/mailman/src/mailman/database/transaction.py", line 85, in wrapper
    return function(args[0], config.db.store, *args[1:], **kws)
  File "/var/lib/mailman/mailman/src/mailman/model/usermanager.py", line 88, in get_user
    return addresses.one().user
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/SQLAlchemy-1.3.13-py3.6-linux-x86_64.egg/sqlalchemy/orm/at                        tributes.py", line 282, in __get__
    return self.impl.get(instance_state(instance), dict_)
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/SQLAlchemy-1.3.13-py3.6-linux-x86_64.egg/sqlalchemy/orm/at                        tributes.py", line 710, in get
    value = self.callable_(state, passive)
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/SQLAlchemy-1.3.13-py3.6-linux-x86_64.egg/sqlalchemy/orm/st                        rategies.py", line 747, in _load_for_state
    session, state, primary_key_identity, passive
  File "<string>", line 1, in <lambda>
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/SQLAlchemy-1.3.13-py3.6-linux-x86_64.egg/sqlalchemy/orm/st                        rategies.py", line 837, in _emit_lazyload
    session.query(self.mapper), primary_key_identity
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/SQLAlchemy-1.3.13-py3.6-linux-x86_64.egg/sqlalchemy/ext/ba                        ked.py", line 612, in _load_on_pk_identity
    result = list(bq.for_session(self.session).params(**params))
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/SQLAlchemy-1.3.13-py3.6-linux-x86_64.egg/sqlalchemy/orm/lo                        ading.py", line 101, in instances
    util.raise_from_cause(err)
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/SQLAlchemy-1.3.13-py3.6-linux-x86_64.egg/sqlalchemy/util/c                        ompat.py", line 398, in raise_from_cause
    reraise(type(exception), exception, tb=exc_tb, cause=cause)
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/SQLAlchemy-1.3.13-py3.6-linux-x86_64.egg/sqlalchemy/util/c                        ompat.py", line 153, in reraise
    raise value
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/SQLAlchemy-1.3.13-py3.6-linux-x86_64.egg/sqlalchemy/orm/lo                        ading.py", line 81, in instances
    rows = [proc(row) for row in fetch]
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/SQLAlchemy-1.3.13-py3.6-linux-x86_64.egg/sqlalchemy/orm/lo                        ading.py", line 81, in <listcomp>
    rows = [proc(row) for row in fetch]
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/SQLAlchemy-1.3.13-py3.6-linux-x86_64.egg/sqlalchemy/orm/lo                        ading.py", line 510, in _instance
    tuple([row[column] for column in pk_cols]),
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/SQLAlchemy-1.3.13-py3.6-linux-x86_64.egg/sqlalchemy/orm/lo                        ading.py", line 510, in <listcomp>
    tuple([row[column] for column in pk_cols]),
  File "/var/lib/mailman/venv3/lib64/python3.6/site-packages/SQLAlchemy-1.3.13-py3.6-linux-x86_64.egg/sqlalchemy/engine                        /result.py", line 627, in _key_fallback
    % expression._string_or_unprintable(key)
sqlalchemy.exc.NoSuchColumnError: "Could not locate column in row for column 'user.id'"
[26/Jul/2020:20:19:03 +0530] "GET /3.1/lists/msgteam-hyd.lsmgr.nic.in/roster/owner HTTP/1.1" 500 0 "-" "-"