老师，运行项目是报错
AttributeError: ‘Flask’ object has no attribute ‘register_blueprints’

from flask import Flask

def register_blueprints(app):
    from app.api.v1 import create_blueprint_v1
    app.register_blueprints(create_blueprint_v1(),url_prefix = '/v1')


def create_app():
    app = Flask(__name__)
    app.config.from_object('app.config.setting')
    app.config.from_object('app.config.secure')

    register_blueprints(app)

    return app