why will "Tortoise.init_models" raise a ConfigurationError

Describe the bug
i'm a beginner for fastapi, i have a model that has a ForeignKeyRelation; i want to show this related field with "pydantic_model_creator" function; I learned that it is possible to set "Tortoise.init_models"; but i have a problem with it;

To Reproduce
Here is my application structure.
`

• ├── app
• │ ├── api
• │ │ ├── access_admin.py
• │ │ ├── Base.py
• │ │ ├── login.py
• │ │ ├── role_admin.py
• │ │ ├── test_auth.py
• │ │ ├── test_redis.py
• │ │ └── user.py
• │ ├── core
• │ │ ├── Auth.py
• │ │ ├── Events.py
• │ │ ├── Exception.py
• │ │ ├── Helper.py
• │ │ ├── Middleware.py
• │ │ ├── Response.py
• │ │ └── Router.py
• │ ├── curd
• │ │ └── user.py
• │ ├── database
• │ │ ├── mysql.py
• │ │ ├── redis.py
• │ │ └── sqlite.py
• │ ├── models
• │ │ ├── base.py
• │ │ └── serializers.py
• │ ├── schemas
• │ │ ├── access.py
• │ │ ├── base.py
• │ │ ├── role.py
• │ │ └── user.py
• │ └── views
• │ ├── Base.py
• │ ├── home.py
• │
• ├── config.py
• │
• ├── main.py

`

database connection is setup in app/database/mysql.py:

`
from fastapi import FastAPI
from tortoise.contrib.fastapi import register_tortoise
import os
from tortoise import Tortoise

DB_ORM_CONFIG = {
"connections" :{
"english_notes":{
'engine': 'tortoise.backends.mysql',
"credentials": {
'host': os.getenv('BASE_HOST', '127.0.0.1'),
'user': os.getenv('BASE_USER', 'notes'),
'password': os.getenv('BASE_PASSWORD', '961025.'),
'port': int(os.getenv('BASE_PORT', 3306)),
'database': os.getenv('BASE_DB', 'english_notes'),
}
}
},

"apps":{
    "english_notes":{"models": ["app.models.base", "aerich.models"], "default_connection": "english_notes"},
    "base" : {"models": ["app.models.base"], "default_connection": "english_notes"},
},

'use_tz': False,
'timezone': 'Asia/Shanghai'
}

async def register_mysql(app: FastAPI):
register_tortoise(
app,
config=DB_ORM_CONFIG,

    generate_schemas=False,
    add_exception_handlers=True,  
)

model is in app/models/base.py:
from tortoise.models import Model
from tortoise import fields

class EnglishSentence(Model):
id = fields.IntField(pk=True)
original = fields.CharField(max_length=255, description="英语原文", unique=True)
translation = fields.CharField(max_length=255, description="中文翻译")
notes = fields.TextField(description="笔记", null=True)
create_time = fields.DatetimeField(auto_now_add=True, description='创建时间')
update_time = fields.DatetimeField(auto_now=True, description="更新时间")
auhtor: fields.ForeignKeyRelation["User"] = fields.ForeignKeyField("base.User", related_name="sentence", on_delete=fields.SET_NULL, null=True)

class Meta:
    """
        对该数据库模型类进行相关 配置设置
    """
    table_description = "英语笔记"
    table = "notes"
    # 建立索引
    # 使用联合索引 
    indexes = (("original", "translation"),)


def __str__(self) -> str:
    return self.original # type: ignore

class TimestampMixin(Model):
create_time = fields.DatetimeField(auto_now_add=True, description='创建时间')
update_time = fields.DatetimeField(auto_now=True, description="更新时间")

class Meta:
    # 抽象类 - 继承 避免代码重写，抽象类本身不生成数据表
    abstract = True 
    # table = None  
    # app = "base" 

class User(TimestampMixin):

sentence : fields.ReverseRelation[EnglishSentence]   # 仅用于代码提示，请注意role 必须和 EnglishSentence里面的外键 指定的related_name 同名


user_name = fields.CharField(null=True, max_length=20, description="用户名", unique=True)
user_type = fields.BooleanField(default=False, description="用户类型 True:超级管理员 False:普通管理员")
password = fields.CharField(null=True, max_length=255)
nickname = fields.CharField(default="Boziyoung", max_length=255, description='昵称')
user_phone = fields.CharField(null=True, max_length=11 ,description="手机号", unique=True)
user_email = fields.CharField(max_length=255, description="邮箱", unique=True)
full_name = fields.CharField(max_length=255, null=True, description="姓名")
user_status = fields.IntField(default=0, description='0未激活 1正常 2禁用')
header_img = fields.CharField(null=True, max_length=255, description='头像')
sex = fields.IntField(default=0, null=True, description='0未知 1男 2女')
client_host = fields.CharField(null=True, max_length=19, description="访问IP")

class Meta:
    table_description = "用户表"
    table = "user"
    app = "base"

`
The relationship of the above model is "ForeignKeyField" in EnglishSentence model;

The serialization model is app/model/serializers.py:
`"""
创建各个序列化对象
"""
from app.models.base import EnglishSentence, User
from tortoise.contrib.pydantic.creator import pydantic_model_creator, pydantic_queryset_creator

from tortoise import Tortoise
Tortoise.init_models(["app.models.base"], "models")

admin_english = pydantic_model_creator(EnglishSentence, name= "admin")

list_english = pydantic_queryset_creator(EnglishSentence, name= "list_english", exclude=("notes","create_time", "update_time", "original"))

single_english = pydantic_model_creator(EnglishSentence, name="single_english", exclude=("update_time", "create_time"))

single_english_queryset = pydantic_queryset_creator(EnglishSentence, name="single_english_list", exclude=("notes","create_time", "update_time", "original"))

single_user = pydantic_model_creator(User, name="single_user", exclude=("password", "remarks", "client_host", "create_time", "update_time",))`

i new added a line of code which is "Tortoise.init_models(["app.models.base"], "models")"
but it raised a ConfigurationError

Detailed error ：
`WARNING: WatchFiles detected changes in 'app/models/serializers.py'. Reloading...
Process SpawnProcess-35:
Traceback (most recent call last):
File "/home/ubuntu/english/env/lib/python3.11/site-packages/tortoise/init.py", line 119, in get_related_model
return cls.apps[related_app_name][related_model_name]
~~~~~~~~^^^^^^^^^^^^^^^^^^
KeyError: 'base'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/lib/python3.11/multiprocessing/process.py", line 314, in _bootstrap
self.run()
File "/usr/lib/python3.11/multiprocessing/process.py", line 108, in run
self._target(*self._args, **self._kwargs)
File "/home/ubuntu/english/env/lib/python3.11/site-packages/uvicorn/_subprocess.py", line 76, in subprocess_started
target(sockets=sockets)
File "/home/ubuntu/english/env/lib/python3.11/site-packages/uvicorn/server.py", line 59, in run
return asyncio.run(self.serve(sockets=sockets))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.11/asyncio/runners.py", line 190, in run
return runner.run(main)
^^^^^^^^^^^^^^^^
File "/usr/lib/python3.11/asyncio/runners.py", line 118, in run
return self._loop.run_until_complete(task)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "uvloop/loop.pyx", line 1517, in uvloop.loop.Loop.run_until_complete
File "/home/ubuntu/english/env/lib/python3.11/site-packages/uvicorn/server.py", line 66, in serve
config.load()
File "/home/ubuntu/english/env/lib/python3.11/site-packages/uvicorn/config.py", line 471, in load
self.loaded_app = import_from_string(self.app)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/ubuntu/english/env/lib/python3.11/site-packages/uvicorn/importer.py", line 21, in import_from_string
module = importlib.import_module(module_str)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.11/importlib/init.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "", line 1206, in _gcd_import
File "", line 1178, in _find_and_load
File "", line 1149, in _find_and_load_unlocked
File "", line 690, in _load_unlocked
File "", line 940, in exec_module
File "", line 241, in _call_with_frames_removed
File "/home/ubuntu/english/english_backend/main.py", line 11, in
from app.core.Router import AllRouter
File "/home/ubuntu/english/english_backend/app/core/Router.py", line 4, in
from app.api.Base import ApiRouter
File "/home/ubuntu/english/english_backend/app/api/Base.py", line 48, in
from app.api.user import user_add, user_del, user_info, get_user_rules, account_login, user_edit, change_password
File "/home/ubuntu/english/english_backend/app/api/user.py", line 14, in
from app.models.serializers import single_user
File "/home/ubuntu/english/english_backend/app/models/serializers.py", line 9, in
Tortoise.init_models(["app.models.base"], "models")
File "/home/ubuntu/english/env/lib/python3.11/site-packages/tortoise/init.py", line 396, in init_models
cls._init_relations()
File "/home/ubuntu/english/env/lib/python3.11/site-packages/tortoise/init.py", line 161, in _init_relations
related_model = get_related_model(related_app_name, related_model_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/ubuntu/english/env/lib/python3.11/site-packages/tortoise/init.py", line 122, in get_related_model
raise ConfigurationError(f"No app with name '{related_app_name}' registered.")
tortoise.exceptions.ConfigurationError: No app with name 'base' registered.
`

Expected results:
I don't know what I should do, I hope you all can help me to solve it; thank you.

Start with app/models/serializers.py and the Tortoise.init_models call, then compare it with the configuration in app/database/mysql.py and the models in app/models/base.py. Reproduce the reported ConfigurationError and trace how the registered app names relate to the ForeignKeyField declaration. Done means documenting or testing the supported initialization path and its expected result.