Invalid username or password

[cuiyongqiang521]

Login to CESI with the default account for the first time. After restarting CESI, you will be prompted with "invalid user name or password". Even if you change the password, it will be invalid. The following is the background error, can you help to see what the problem.

File "/data/Python3.6/lib/python3.6/site-packages/Flask-0.12.1-py3.6.egg/flask/app.py", line 1612, in full_dispatch_request
rv = self.dispatch_request()
File "/data/Python3.6/lib/python3.6/site-packages/Flask-0.12.1-py3.6.egg/flask/app.py", line 1598, in dispatch_request
return self.view_functionsrule.endpoint
File "/data/cesi/cesi/api/v2/auth.py", line 35, in login
result = User.verify(user_credentials["username"], user_credentials["password"])
File "/data/cesi/cesi/models.py", line 37, in verify
user = User.query.filter_by(username=username).first()
File "/data/Python3.6/lib/python3.6/site-packages/SQLAlchemy-1.3.18-py3.6-linux-x86_64.egg/sqlalchemy/orm/query.py", line 3397, in first
ret = list(self[0:1])
File "/data/Python3.6/lib/python3.6/site-packages/SQLAlchemy-1.3.18-py3.6-linux-x86_64.egg/sqlalchemy/orm/query.py", line 3171, in getitem
return list(res)
File "/data/Python3.6/lib/python3.6/site-packages/SQLAlchemy-1.3.18-py3.6-linux-x86_64.egg/sqlalchemy/orm/query.py", line 3503, in iter
return self._execute_and_instances(context)
File "/data/Python3.6/lib/python3.6/site-packages/SQLAlchemy-1.3.18-py3.6-linux-x86_64.egg/sqlalchemy/orm/query.py", line 3525, in _execute_and_instances
querycontext, self._connection_from_session, close_with_result=True
File "/data/Python3.6/lib/python3.6/site-packages/SQLAlchemy-1.3.18-py3.6-linux-x86_64.egg/sqlalchemy/orm/query.py", line 3540, in _get_bind_args
mapper=self._bind_mapper(), clause=querycontext.statement, **kw
File "/data/Python3.6/lib/python3.6/site-packages/SQLAlchemy-1.3.18-py3.6-linux-x86_64.egg/sqlalchemy/orm/query.py", line 3518, in _connection_from_session
conn = self.session.connection(**kw)
File "/data/Python3.6/lib/python3.6/site-packages/SQLAlchemy-1.3.18-py3.6-linux-x86_64.egg/sqlalchemy/orm/session.py", line 1141, in connection
execution_options=execution_options,
File "/data/Python3.6/lib/python3.6/site-packages/SQLAlchemy-1.3.18-py3.6-linux-x86_64.egg/sqlalchemy/orm/session.py", line 1147, in _connection_for_bind
engine, execution_options
File "/data/Python3.6/lib/python3.6/site-packages/SQLAlchemy-1.3.18-py3.6-linux-x86_64.egg/sqlalchemy/orm/session.py", line 409, in _connection_for_bind
self._assert_active()
File "/data/Python3.6/lib/python3.6/site-packages/SQLAlchemy-1.3.18-py3.6-linux-x86_64.egg/sqlalchemy/orm/session.py", line 296, in _assert_active
code="7s2a",
sqlalchemy.exc.InvalidRequestError: This Session's transaction has been rolled back due to a previous exception during flush. To begin a new transaction with this Session, first issue Session.rollback(). Original exception was: (sqlite3.IntegrityError) column username is not unique
[SQL: INSERT INTO users (username, password, usertype) VALUES (?, ?, ?)]
[parameters: ('admin', 'pbkdf2:sha256:50000$AuTMhJVb$32b7ed7be7ca0344bf6984e194e35d418ef1ca818fec5d6ab83372dae98eb4e4', 0)]
(Background on this error at: http://sqlalche.me/e/13/gkpj) (Background on this error at: http://sqlalche.me/e/13/7s2a)
10.208.1.13 - - [14/Aug/2020 05:53:04] "POST /api/v2/auth/login/ HTTP/1.1" 500