Official demo run error(AttributeError: __pydantic_extra__)?

[jekoie]

First Check

• I added a very descriptive title here.
• I used the GitHub search to find a similar question and didn't find it.
• I searched the SQLModel documentation, with the integrated search.
• I already searched in Google "How to X in SQLModel" and didn't find any information.
• I already read and followed all the tutorial in the docs and didn't find an answer.
• I already checked if it is not related to SQLModel but to Pydantic.
• I already checked if it is not related to SQLModel but to SQLAlchemy.

Commit to Help

• I commit to help with one of those options 👆

Example Code

# from typing_extensions import Union, Optional

from typing import Optional

from sqlmodel import Field, SQLModel, Session, create_engine, select


class Hero(SQLModel, table=True):
    id: Optional[int] = Field(default=None, primary_key=True)
    name: str
    secret_name: str
    age: Optional[int] = None


h1 = Hero(name="jie", secret_name="jie")
h2 = Hero(name="jie", secret_name="jie")

engine = create_engine("sqlite:///db.db")

SQLModel.metadata.create_all(engine)

with Session(engine) as s:
    s.add(h1)
    s.add(h2)
    s.commit()

with Session(engine) as s:
    st = select(Hero).where(Hero.name == "jie")
    hero = s.exec(st).first()
    print(hero)

Description

I am new to use sqlmodel,I try to write sample follow official doc.but it run errors.

Conolse Error

PS E:\test> & C:/Users/jekoi/AppData/Local/Programs/Python/Python38-32/python.exe e:/test/t6.py
Traceback (most recent call last):
  File "e:/test/t6.py", line 30, in <module>
    print(hero)
  File "C:\Users\jekoi\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pydantic\main.py", line 893, in __str__  
    return self.__repr_str__(' ')
  File "C:\Users\jekoi\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pydantic\_internal\_repr.py", line 55, in __repr_str__
    return join_str.join(repr(v) if a is None else f'{a}={v!r}' for a, v in self.__repr_args__())
  File "C:\Users\jekoi\AppData\Local\Programs\Python\Python38-32\lib\site-packages\sqlmodel\main.py", line 732, in __repr_args__
    return [
  File "C:\Users\jekoi\AppData\Local\Programs\Python\Python38-32\lib\site-packages\sqlmodel\main.py", line 732, in <listcomp>
    return [
  File "C:\Users\jekoi\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pydantic\main.py", line 881, in __repr_args__
    pydantic_extra = self.__pydantic_extra__
  File "C:\Users\jekoi\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pydantic\main.py", line 723, in __getattr__
    pydantic_extra = object.__getattribute__(self, '__pydantic_extra__')
AttributeError: __pydantic_extra__
PS E:\test>

Operating System

Windows

Operating System Details

Win10 professional edition 64bit X86-64

SQLModel Version

0.0.14

Python Version

Python 3.8.10 32bit

Additional Context

No response