Invalid precision value error about flask-admin HOT 2 OPEN

import argparse
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_admin import Admin
from flask_admin.contrib.sqla import ModelView
from sqlalchemy import create_engine

app = Flask(__name__)

# Setup the Flask app
app.config['SECRET_KEY'] = 'mysecret'
app.config['SQLALCHEMY_DATABASE_URI'] = "YOUR SQL SERVER DB connection"
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False

db = SQLAlchemy(app)

# Optionally, if you want to perform some operations directly with the engine, you can create it like this:
engine = create_engine(app.config['SQLALCHEMY_DATABASE_URI'], echo=True, use_setinputsizes=False)

class User(db.Model):
    __tablename__ = 'user'
    __table_args__ = {'schema': 'DevApp'}
    
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(150), unique=True)
    email = db.Column(db.String(150))

admin = Admin(app, name='My App Admin', template_mode='bootstrap3')
admin.add_view(ModelView(User, db.session))

def create_db():
    """Creates the database tables."""
    with app.app_context():
        db.create_all()
        print('Database tables created successfully.')

def drop_db():
    """Drops the database tables."""
    with app.app_context():
        db.drop_all()
        print('Database tables dropped successfully.')

def run_app():
    app.run(debug=True)

def main():
    parser = argparse.ArgumentParser(description="Manage the Flask application.")
    parser.add_argument('command', choices=['run', 'create_db', 'drop_db'],
                        help='the command to run')
    args = parser.parse_args()
    
    if args.command == 'run':
        run_app()
    elif args.command == 'create_db':
        create_db()
    elif args.command == 'drop_db':
        drop_db()

if __name__ == '__main__':
    main()