“A Minimal Application” of flask-sqlalchemy Official website can not run successfully when using the latest version(2.4.4)

[cuuxiao]

Description

1. Install the latest flask-sqlalchemy(2.4.4) from Official website;
2. It will install related packages, such as SQLAlchemy(1.4.0)
3. Refer to A Minimal Application to complete my first demo program.
4. But unable to create database when running 'from app import db' and 'db.create_all()' in flask shell,The error is as follows:
   
5. The 'db.create_all()' can be run successfully and the database can be created successfully when I downgrade SQLAlchemy's version to 1.3.6

Actual results
The 'db.create_all()' can not be run successfully when the SQLAlchemy's version is 1.4.0 and 1.4.1

Expected results
The 'db.create_all()' should be run successfully when the SQLAlchemy's version is 1.4.0 and 1.4.1, like 1.3.6. The flask-sqlalchemy
should be compatible with the latest SQLAlchemy

Environment: win

• Python version:3.7.9
• Flask-SQLAlchemy version:2.4.4
• SQLAlchemy version:1.4.0

[cuuxiao]

pls check and confirm, thanks a lot

[davidism]

Duplicate of #927