Postman ошибка 500

Я создаю API, используя flask для сети
у меня уже есть база данных, и запрос GET работает, но когда я пытаюсь выполнить POST, он дает мне эту ошибку

500 INTERNAL SERVER ERROR

Это код, который я написал

#User_schema
class UserSchema(ma.Schema):
 class Mata:
  fields = ('id', 'name', 'Email', 'Pass', 'Phone', 'Department', 'Major')

#init_schema
user_schema = UserSchema()
users_schema = UserSchema(many=True)

#create user
@app.route('/user', methods=['POST'])
def add_User():
 #id = request.json['id']
 name = request.json['name']
 Email = request.json['Email']
 Pass = request.json['Pass']
 #Phone = request.json['Phone']
 Department = request.json['Department']
 Major = request.json['Major']

 new_user = User(name, Email, Pass, Department, Major)
 db.session.add(new_user)
 db.session.commit()

 return user_schema.jsonify(new_user)

Это запрос, который я добавил на почту человека

{
    "name": "User 1",
    "Email": "User1@.com",
    "Pass": "qq1",
    "Phone": "0551",
    "Department": "IT 1",
    "Major": "IT 1"
}

Я также использую локальный сервер
я посмотрел на другие ссылки, и все просят журналы, и если я не ошибаюсь, я думаю, что я получаю их от

View > Developer > Show DevTools > Console

И это скриншот журнала: (я думаю)

В чем именно проблема я не понимаю

Обновлено: Вот полный код:

from flask import Flask, request, jsonify
from flask_sqlalchemy import SQLAlchemy
from flask_marshmallow import Marshmallow
import os

app = Flask(__name__)
basedir = os.path.abspath(os.path.dirname(__file__))
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///db.db'
app.config['SQLALCHEMY_TRACK_MODIFICATION'] = False
db = SQLAlchemy(app)
ma = Marshmallow(app)

class User (db.Model):
 id = db.Column(db.Integer,primary_key=True)
 name = db.Column(db.String(30))
 Email = db.Column(db.String(30))
 Pass = db.Column(db.String(30))
 Phone = db.Column(db.Integer)
 Department = db.Column(db.String(30))
 Major = db.Column(db.String(30))
 meeting = db.relationship('Meeting', backref='creator')
 meetingroom = db.relationship('MeetingRoom', backref='reserver')

    def _init_(self, name, Email, Pass, Phone, Department, Major):
  self.name = name
  self.Email = Email
  self.Pass = Pass
  self.Phone = Phone
  self.Department = Department
  self.Major = Major

class MeetingRoom (db.Model):
 mrid = db.Column(db.Integer,primary_key=True)
 reserver_id = db.Column(db.Integer, db.ForeignKey('user.id'))
 #meetingm = db.relationship('Meeting', backref='roomno')
 mid = db.Column(db.Integer, db.ForeignKey('meeting.Mid'))

class Meeting (db.Model):
 Mid = db.Column(db.Integer,primary_key=True)
 Mname = db.Column(db.String(100))
 Des = db.Column(db.String(100))
 Date = db.Column(db.String(20))
 creator_id = db.Column(db.Integer, db.ForeignKey('user.id'))
 meetingroomm = db.relationship('MeetingRoom', backref='mroom')
 #roomno_id = db.Column(db.Integer, db.ForeignKey('meetingroom.mrid')


##json 
@app.route('/users', methods=['GET'])
def getuser():
 users = User.query.all()
 output = []
 for user in users:
  user_data = {}
  user_data['id'] = user.id
  user_data['name'] = user.name
  user_data['Email'] = user.Email
  user_data['Pass'] = user.Pass
  user_data['Phone'] = user.Phone
  user_data['Department'] = user.Department
  user_data['Major'] = user.Major
  output.append(user_data)
 return jsonify({'users' : output})


#User_schema
class UserSchema(ma.Schema):
 class Mata:
  fields = ('id', 'name', 'Email', 'Pass', 'Phone', 'Department', 'Major')

#init_schema
user_schema = UserSchema()
users_schema = UserSchema(many=True)

#create user
@app.route('/user', methods=['POST'])
def add_User():
 #id = request.json['id']
 name = request.json['name']
 Email = request.json['Email']
 Pass = request.json['Pass']
 #Phone = request.json['Phone']
 Department = request.json['Department']
 Major = request.json['Major']

 new_user = User(name, Email, Pass, Department, Major)
 db.session.add(new_user)
 db.session.commit()

 return user_schema.jsonify(new_user)

#meeting_schema
class MeetingSchema(ma.Schema):
 class Mata:
  fields = ('Mid', 'Mname', 'Des', 'Date', 'creator_id')

#init_schema
meeting_schema = MeetingSchema()
meetings_schema = MeetingSchema(many=True)

#create meeting
@app.route('/meeting', methods=['POST'])
def add_meeting():
 Mname = request.json['Mname']
 Des = request.json['Des']
 Date = request.json['Date']


 new_meeting = Meeting(Mname, Des, Date)
 db.session.add(new_meeting)
 db.session.commit()

 return user_schema.jsonify(new_meeting)


if __name__ == '__main__':
 app.run(debug=True)

2-е Обновлено: журнал консоли

После добавления ошибки определения:

cursor.execute(statement, parameters)
sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) database is locked
[SQL: INSERT INTO user (name, "Email", "Pass", "Phone", "Department", "Major") VALUES (?, ?, ?, ?, ?, ?)]
[parameters: ('User 1', 'User1@.com', 'qq1', '0551', 'IT 1', 'IT 1')]
(Background on this error at: http://sqlalche.me/e/e3q8)

--Scan 1 item.
[
  {
    "hid": 1783,
    "plu": "012000151163",
    "qty": 1,
    "price": "3.74",
    "userid": "mark",
    "scandatetime": "2017-10-20 12:12:07.012"
  }
]
*** Service (httputils2service) Create ***
** Service (httputils2service) Start **
--Successfully posted from B4A app to web service.
--Web service response:
{
    "items": [
        {
            "RecordsInserted": "ok"
        }
    ]
}
** Activity (uploadscandetail) Pause, UserClosed = true **
** Activity (setup) Resume **
** Activity (setup) Pause, UserClosed = true **
** Activity (main) Resume **
** Activity (main) Pause, UserClosed = false **
** Activity (scan) Create, isFirst = false **
** Activity (scan) Resume **
** Activity (scan) Pause, UserClosed = false **
** Activity (scan) Create, isFirst = false **
** Activity (scan) Resume **
** Activity (scan) Pause, UserClosed = false **
** Activity (scan) Create, isFirst = false **
** Activity (scan) Resume **
** Activity (scan) Pause, UserClosed = true **
** Activity (main) Resume **
** Activity (main) Pause, UserClosed = false **
** Activity (setup) Create, isFirst = false **
** Activity (setup) Resume **
** Activity (setup) Pause, UserClosed = false **
** Activity (uploadscandetail) Create, isFirst = false **
** Activity (uploadscandetail) Resume **
--Trying 7 records, which are all the same PLU item.
--It will fail with 500 internal server error.
--Following JSON character count: 1151
[
  {
    "hid": 1783,
    "plu": "012000151163",
    "qty": 1,
    "price": "3.74",
    "userid": "mark",
    "scandatetime": "2017-10-20 12:14:17.821"
  },
  {
    "hid": 1783,
    "plu": "012000151163",
    "qty": 1,
    "price": "3.74",
    "userid": "mark",
    "scandatetime": "2017-10-20 12:14:18.445"
  },
  {
    "hid": 1783,
    "plu": "012000151163",
    "qty": 1,
    "price": "3.74",
    "userid": "mark",
    "scandatetime": "2017-10-20 12:14:19.076"
  },
  {
    "hid": 1783,
    "plu": "012000151163",
    "qty": 1,
    "price": "3.74",
    "userid": "mark",
    "scandatetime": "2017-10-20 12:14:19.696"
  },
  {
    "hid": 1783,
    "plu": "012000151163",
    "qty": 1,
    "price": "3.74",
    "userid": "mark",
    "scandatetime": "2017-10-20 12:14:20.359"
  },
  {
    "hid": 1783,
    "plu": "012000151163",
    "qty": 1,
    "price": "3.74",
    "userid": "mark",
    "scandatetime": "2017-10-20 12:14:21.260"
  },
  {
    "hid": 1783,
    "plu": "012000151163",
    "qty": 1,
    "price": "3.74",
    "userid": "mark",
    "scandatetime": "2017-10-20 12:14:23.341"
  }
]
ResponseError. Reason: Internal Server Error, Response: <!DOCTYPE html>

<html><head>

<title>500 Internal Server Error</title>

</head><body>

<h1>500 Internal Server Error</h1>

The server encountered a fatal error processing this request and could not continue.

<p>

<hr>

<address>Alpha Anywhere Application Server Application Server/12.0 Build/4119-4825 at SAV-APP1 Port 80</address>

</body></html>
** Activity (uploadscandetail) Pause, UserClosed = true **
** Activity (setup) Resume **
** Activity (setup) Pause, UserClosed = false **
** Activity (scanneditemsview) Create, isFirst = false **
** Activity (scanneditemsview) Resume **
** Activity (scanneditemsview) Pause, UserClosed = true **
** Activity (setup) Resume **
** Activity (setup) Pause, UserClosed = false **
** Activity (uploadscandetail) Create, isFirst = false **
** Activity (uploadscandetail) Resume **
--I then deleted one record, making 6 records.
--All the same PLU items.
--Post works fine.
--Following JSON character count: 987
[
  {
    "hid": 1783,
    "plu": "012000151163",
    "qty": 1,
    "price": "3.74",
    "userid": "mark",
    "scandatetime": "2017-10-20 12:14:17.821"
  },
  {
    "hid": 1783,
    "plu": "012000151163",
    "qty": 1,
    "price": "3.74",
    "userid": "mark",
    "scandatetime": "2017-10-20 12:14:18.445"
  },
  {
    "hid": 1783,
    "plu": "012000151163",
    "qty": 1,
    "price": "3.74",
    "userid": "mark",
    "scandatetime": "2017-10-20 12:14:19.696"
  },
  {
    "hid": 1783,
    "plu": "012000151163",
    "qty": 1,
    "price": "3.74",
    "userid": "mark",
    "scandatetime": "2017-10-20 12:14:20.359"
  },
  {
    "hid": 1783,
    "plu": "012000151163",
    "qty": 1,
    "price": "3.74",
    "userid": "mark",
    "scandatetime": "2017-10-20 12:14:21.260"
  },
  {
    "hid": 1783,
    "plu": "012000151163",
    "qty": 1,
    "price": "3.74",
    "userid": "mark",
    "scandatetime": "2017-10-20 12:14:23.341"
  }
]
{
    "items": [
        {
            "RecordsInserted": "ok"
        }
    ]
}
** Activity (uploadscandetail) Pause, UserClosed = true **
** Activity (setup) Resume **
** Activity (setup) Pause, UserClosed = true **
** Activity (main) Resume **
** Activity (main) Pause, UserClosed = true **