FastAPI и Pydantic RecursionError, вызывающие исключение в приложении ASGI

Описание

Я видел аналогичные проблемы, связанные с самореферентными моделями Pydantic, вызывающими RecursionError: maximum recursion depth exceeded in comparison, но, насколько я могу судить, в код не включены модели со ссылками на себя. Я просто использую класс Pydantic BaseModel.

Код выполняется успешно до тех пор, пока функция в audit.py ниже не попытается вернуть выходные данные модели.

Я включил полную трассировку, так как не уверен, с чего начать с этой ошибки. Я запускал код с PyCharm и без IDE, и он всегда производит обратную трассировку, показанную ниже, но не приводит к сбою приложения, но возвращает код состояния http 500 во внешний интерфейс.

Любые советы будут высоко ценится.

Как и предполагалось, я также попытался sys.setrecursionlimit(1500) увеличить предел рекурсии.

Среда

• ОС: Windows 10
• Версия FastAPI: 0.61.1
• Пидантическая версия: 1.6.1
• Версия Uvicorn: 0.11.8
• Версия Python: 3.7.1
• Версия Pycharm: 2020.2

Приложение

main.py

import uvicorn
from fastapi import FastAPI
from starlette.middleware.cors import CORSMiddleware


from app.api.routes.router import api_router
from app.core.logging import init_logging
from app.core.config import settings

init_logging()


def get_app() -> FastAPI:
    application = FastAPI(title=settings.APP_NAME, version=settings.APP_VERSION, debug=settings.DEBUG)

    if settings.BACKEND_CORS_ORIGINS:
        # middleware support for cors
        application.add_middleware(
            CORSMiddleware,
            allow_origins=[str(origin) for origin in settings.BACKEND_CORS_ORIGINS],
            allow_credentials=True,
            allow_methods=["*"],
            allow_headers=["*"],
        )
    application.include_router(api_router, prefix=settings.API_V1_STR)
    return application


app = get_app()

if __name__ == "__main__":
    uvicorn.run("main:app", host="127.0.0.1", port=80)

router.py

from fastapi import APIRouter

from app.api.routes import audit

api_router = APIRouter()
api_router.include_router(audit.router, tags=["audit"], prefix="/audit")

audit.py

import validators
from fastapi import APIRouter, HTTPException
from loguru import logger

from app.api.dependencies.audit import analyzer
from app.schemas.audit import AuditPayload, AuditResult

router = APIRouter()


@router.post("/", response_model=AuditResult, name="audit", status_code=200)
async def post_audit(payload: AuditPayload) -> AuditResult:
    logger.info("Audit request received")
    # validate URL
    try:
        logger.info("Validating URL")
        validators.url(payload.url)
    except HTTPException:
        HTTPException(status_code=404, detail="Invalid URL.")
        logger.exception("HTTPException - Invalid URL")

    # generate output from route audit.py
    logger.info("Running audit analysis. This could take up to 10 minutes. Maybe grab a coffee...")
    analyzed_output = analyzer.analyze(url=payload.url,
                                       brand=payload.brand,
                                       twitter_screen_name=payload.twitter_screen_name,
                                       facebook_page_name=payload.facebook_page_name,
                                       instagram_screen_name=payload.instagram_screen_name,
                                       youtube_user_name=payload.youtube_user_name,
                                       ignore_robots=payload.ignore_robots,
                                       ignore_sitemap=payload.ignore_sitemap,
                                       google_analytics_view_id=payload.google_analytics_view_id)
    output = AuditResult(**analyzed_output)
    return output 

audit_models.py

from pydantic import BaseModel


class AuditPayload(BaseModel):
    url: str
    brand: str
    twitter_screen_name: str
    facebook_page_name: str
    instagram_screen_name: str
    youtube_user_name: str
    ignore_robots: bool
    ignore_sitemap: bool
    google_analytics_view_id: str


class AuditResult(BaseModel):
    base_url: str
    run_time: float
    website_404: dict
    website_302: dict
    website_h1_tags: dict
    website_duplicate_h1: dict
    website_h2_tags: dict
    website_page_duplications: dict
    website_page_similarities: dict
    website_page_desc_duplications: dict
    website_page_title_duplications: dict
    pages: list
    pages_out_links_404: dict = None
    pages_canonicals: dict
    seo_phrases: dict
    social: dict
    google_analytics_report: dict
    google_psi_desktop: dict
    google_psi_mobile: dict
    google_algo_updates: dict
    google_sb: list
    robots_txt: list

Эта строка выдает ошибку в журналах: 2020-09-10 10: 02: 31.483 | ОШИБКА | uvicorn.protocols.http.h11_impl: run_asgi: 391 - Исключение в приложении ASGI

Я считаю, что этот бит наиболее важен для понимания того, почему возникает эта ошибка:

  File "pydantic\main.py", line 623, in pydantic.main.BaseModel._get_value
  [Previous line repeated 722 more times]

Полная трассировка:

Traceback (most recent call last):
  File "C:\Users\<user>\AppData\Local\JetBrains\Toolbox\apps\PyCharm-P\ch-0\202.6948.78\plugins\python\helpers\pydev\pydevconsole.py", line 483, in <module>
    pydevconsole.start_client(host, port)
    │            │            │     └ 50488
    │            │            └ '127.0.0.1'
    │            └ <function start_client at 0x000001BCEDC19D08>
    └ <module 'pydevconsole' from 'C:\\Users\\<user>\\AppData\\Local\\JetBrains\\Toolbox\\apps\\PyCharm-P\\ch-0\\202.6948.78\\pl...
  File "C:\Users\<user>\AppData\Local\JetBrains\Toolbox\apps\PyCharm-P\ch-0\202.6948.78\plugins\python\helpers\pydev\pydevconsole.py", line 411, in start_client
    process_exec_queue(interpreter)
    │                  └ <_pydev_bundle.pydev_ipython_console.InterpreterInterface object at 0x000001BCEDC1BF98>
    └ <function process_exec_queue at 0x000001BCEDC19A60>
  File "C:\Users\<user>\AppData\Local\JetBrains\Toolbox\apps\PyCharm-P\ch-0\202.6948.78\plugins\python\helpers\pydev\pydevconsole.py", line 258, in process_exec_queue
    more = interpreter.add_exec(code_fragment)
           │           │        └ <_pydev_bundle.pydev_console_types.CodeFragment object at 0x000001BCEDCFE748>
           │           └ <function BaseCodeExecutor.add_exec at 0x000001BCECF38488>
           └ <_pydev_bundle.pydev_ipython_console.InterpreterInterface object at 0x000001BCEDC1BF98>
  File "C:\Users\<user>\AppData\Local\JetBrains\Toolbox\apps\PyCharm-P\ch-0\202.6948.78\plugins\python\helpers\pydev\_pydev_bundle\pydev_code_executor.py", line 106, in add_exec
    more = self.do_add_exec(code_fragment)
           │    │           └ <_pydev_bundle.pydev_console_types.CodeFragment object at 0x000001BCEDCFE748>
           │    └ <function InterpreterInterface.do_add_exec at 0x000001BCEDC15D90>
           └ <_pydev_bundle.pydev_ipython_console.InterpreterInterface object at 0x000001BCEDC1BF98>
  File "C:\Users\<user>\AppData\Local\JetBrains\Toolbox\apps\PyCharm-P\ch-0\202.6948.78\plugins\python\helpers\pydev\_pydev_bundle\pydev_ipython_console.py", line 36, in do_add_exec
    res = bool(self.interpreter.add_exec(code_fragment.text))
               │    │           │        │             └ "runfile('E:/Users/<user>/Documents/GitHub/HawkSense/backend/app/app/main.py', wdir='E:/Users/<user>/Docume...
               │    │           │        └ <_pydev_bundle.pydev_console_types.CodeFragment object at 0x000001BCEDCFE748>
               │    │           └ <function _PyDevFrontEnd.add_exec at 0x000001BCEDC15A60>
               │    └ <_pydev_bundle.pydev_ipython_console_011._PyDevFrontEnd object at 0x000001BCEDC350B8>
               └ <_pydev_bundle.pydev_ipython_console.InterpreterInterface object at 0x000001BCEDC1BF98>
  File "C:\Users\<user>\AppData\Local\JetBrains\Toolbox\apps\PyCharm-P\ch-0\202.6948.78\plugins\python\helpers\pydev\_pydev_bundle\pydev_ipython_console_011.py", line 483, in add_exec
    self.ipython.run_cell(line, store_history=True)
    │    │       │        └ "runfile('E:/Users/<user>/Documents/GitHub/HawkSense/backend/app/app/main.py', wdir='E:/Users/<user>/Docume...
    │    │       └ <function InteractiveShell.run_cell at 0x000001BCED5E7268>
    │    └ <_pydev_bundle.pydev_ipython_console_011.PyDevTerminalInteractiveShell object at 0x000001BCEDC350F0>
    └ <_pydev_bundle.pydev_ipython_console_011._PyDevFrontEnd object at 0x000001BCEDC350B8>
  File "C:\Program Files\Python37\lib\site-packages\IPython\core\interactiveshell.py", line 2843, in run_cell
    raw_cell, store_history, silent, shell_futures)
    │         │              │       └ True
    │         │              └ False
    │         └ True
    └ "runfile('E:/Users/<user>/Documents/GitHub/HawkSense/backend/app/app/main.py', wdir='E:/Users/<user>/Docume...
  File "C:\Program Files\Python37\lib\site-packages\IPython\core\interactiveshell.py", line 2869, in _run_cell
    return runner(coro)
           │      └ <generator object InteractiveShell.run_cell_async at 0x000001BCEDC49C78>
           └ <function _pseudo_sync_runner at 0x000001BCED5D0C80>
  File "C:\Program Files\Python37\lib\site-packages\IPython\core\async_helpers.py", line 67, in _pseudo_sync_runner
    coro.send(None)
    │    └ <method 'send' of 'generator' objects>
    └ <generator object InteractiveShell.run_cell_async at 0x000001BCEDC49C78>
  File "C:\Program Files\Python37\lib\site-packages\IPython\core\interactiveshell.py", line 3044, in run_cell_async
    interactivity=interactivity, compiler=compiler, result=result)
                  │                       │                └ <ExecutionResult object at 1bcedcd3470, execution_count=2 error_before_exec=None error_in_exec=None info=<ExecutionInfo objec...
                  │                       └ <IPython.core.compilerop.CachingCompiler object at 0x000001BCEDC356D8>
                  └ 'last_expr'
  File "C:\Program Files\Python37\lib\site-packages\IPython\core\interactiveshell.py", line 3215, in run_ast_nodes
    if (yield from self.run_code(code, result)):
                   │    │        │     └ <ExecutionResult object at 1bcedcd3470, execution_count=2 error_before_exec=None error_in_exec=None info=<ExecutionInfo objec...
                   │    │        └ <code object <module> at 0x000001BCEDCDADB0, file "<ipython-input-2-086756a0f1dd>", line 1>
                   │    └ <function InteractiveShell.run_code at 0x000001BCED5E76A8>
                   └ <_pydev_bundle.pydev_ipython_console_011.PyDevTerminalInteractiveShell object at 0x000001BCEDC350F0>
  File "C:\Program Files\Python37\lib\site-packages\IPython\core\interactiveshell.py", line 3291, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
         │         │    │               │    └ {'__name__': 'pydev_umd', '__doc__': 'Automatically created module for IPython interactive environment', '__package__': None,...
         │         │    │               └ <_pydev_bundle.pydev_ipython_console_011.PyDevTerminalInteractiveShell object at 0x000001BCEDC350F0>
         │         │    └ <property object at 0x000001BCED5D8958>
         │         └ <_pydev_bundle.pydev_ipython_console_011.PyDevTerminalInteractiveShell object at 0x000001BCEDC350F0>
         └ <code object <module> at 0x000001BCEDCDADB0, file "<ipython-input-2-086756a0f1dd>", line 1>
  File "<ipython-input-2-086756a0f1dd>", line 1, in <module>
    runfile('E:/Users/<user>/Documents/GitHub/HawkSense/backend/app/app/main.py', wdir='E:/Users/<user>/Documents/GitHub/HawkSense/backend/app/app')
  File "C:\Users\<user>\AppData\Local\JetBrains\Toolbox\apps\PyCharm-P\ch-0\202.6948.78\plugins\python\helpers\pydev\_pydev_bundle\pydev_umd.py", line 197, in runfile
    pydev_imports.execfile(filename, global_vars, local_vars)  # execute the script
    │             │        │         │            └ {'__name__': '__main__', '__doc__': "\nMain entry point into API for endpoints related to HawkSense's main functionality.\nto...
    │             │        │         └ {'__name__': '__main__', '__doc__': "\nMain entry point into API for endpoints related to HawkSense's main functionality.\nto...
    │             │        └ 'E:/Users/<user>/Documents/GitHub/HawkSense/backend/app/app/main.py'
    │             └ <function execfile at 0x000001BCECC521E0>
    └ <module '_pydev_bundle.pydev_imports' from 'C:\\Users\\<user>\\AppData\\Local\\JetBrains\\Toolbox\\apps\\PyCharm-P\\ch-0\\...
  File "C:\Users\<user>\AppData\Local\JetBrains\Toolbox\apps\PyCharm-P\ch-0\202.6948.78\plugins\python\helpers\pydev\_pydev_imps\_pydev_execfile.py", line 18, in execfile
    exec(compile(contents+"\n", file, 'exec'), glob, loc)
                 │              │              │     └ {'__name__': '__main__', '__doc__': "\nMain entry point into API for endpoints related to HawkSense's main functionality.\nto...
                 │              │              └ {'__name__': '__main__', '__doc__': "\nMain entry point into API for endpoints related to HawkSense's main functionality.\nto...
                 │              └ 'E:/Users/<user>/Documents/GitHub/HawkSense/backend/app/app/main.py'
                 └ '#!/usr/bin/env python\n\n"""\nMain entry point into API for endpoints related to HawkSense\'s main functionality.\ntodo: htt...
  File "E:/Users/<user>/Documents/GitHub/HawkSense/backend/app/app\main.py", line 47, in <module>
    uvicorn.run("main:app", host="127.0.0.1", port=80)  # for debug only
    │       └ <function run at 0x000001BCEDE041E0>
    └ <module 'uvicorn' from 'C:\\Program Files\\Python37\\lib\\site-packages\\uvicorn\\__init__.py'>
  File "C:\Program Files\Python37\lib\site-packages\uvicorn\main.py", line 362, in run
    server.run()
    │      └ <function Server.run at 0x000001BCEDE4B510>
    └ <uvicorn.main.Server object at 0x000001BCFC722198>
  File "C:\Program Files\Python37\lib\site-packages\uvicorn\main.py", line 390, in run
    loop.run_until_complete(self.serve(sockets=sockets))
    │    │                  │    │             └ None
    │    │                  │    └ <function Server.serve at 0x000001BCEDE4B598>
    │    │                  └ <uvicorn.main.Server object at 0x000001BCFC722198>
    │    └ <function BaseEventLoop.run_until_complete at 0x000001BCED49FE18>
    └ <_WindowsSelectorEventLoop running=True closed=False debug=False>
  File "C:\Program Files\Python37\lib\asyncio\base_events.py", line 560, in run_until_complete
    self.run_forever()
    │    └ <function BaseEventLoop.run_forever at 0x000001BCED49FD90>
    └ <_WindowsSelectorEventLoop running=True closed=False debug=False>
  File "C:\Program Files\Python37\lib\asyncio\base_events.py", line 528, in run_forever
    self._run_once()
    │    └ <function BaseEventLoop._run_once at 0x000001BCED4A27B8>
    └ <_WindowsSelectorEventLoop running=True closed=False debug=False>
  File "C:\Program Files\Python37\lib\asyncio\base_events.py", line 1764, in _run_once
    handle._run()
    │      └ <function Handle._run at 0x000001BCED43AB70>
    └ <Handle <TaskStepMethWrapper object at 0x000001BCFC7D4B00>()>
  File "C:\Program Files\Python37\lib\asyncio\events.py", line 88, in _run
    self._context.run(self._callback, *self._args)
    │    │            │    │           │    └ <member '_args' of 'Handle' objects>
    │    │            │    │           └ <Handle <TaskStepMethWrapper object at 0x000001BCFC7D4B00>()>
    │    │            │    └ <member '_callback' of 'Handle' objects>
    │    │            └ <Handle <TaskStepMethWrapper object at 0x000001BCFC7D4B00>()>
    │    └ <member '_context' of 'Handle' objects>
    └ <Handle <TaskStepMethWrapper object at 0x000001BCFC7D4B00>()>
> File "C:\Program Files\Python37\lib\site-packages\uvicorn\protocols\http\h11_impl.py", line 388, in run_asgi
    result = await app(self.scope, self.receive, self.send)
                   │   │    │      │    │        │    └ <function RequestResponseCycle.send at 0x000001BCFC757840>
                   │   │    │      │    │        └ <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4A90>
                   │   │    │      │    └ <function RequestResponseCycle.receive at 0x000001BCFC7578C8>
                   │   │    │      └ <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4A90>
                   │   │    └ {'type': 'http', 'asgi': {'version': '3.0', 'spec_version': '2.1'}, 'http_version': '1.1', 'server': ('127.0.0.1', 80), 'clie...
                   │   └ <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4A90>
                   └ <uvicorn.middleware.proxy_headers.ProxyHeadersMiddleware object at 0x000001BCFC722BA8>
  File "C:\Program Files\Python37\lib\site-packages\uvicorn\middleware\proxy_headers.py", line 45, in __call__
    return await self.app(scope, receive, send)
                 │    │   │      │        └ <bound method RequestResponseCycle.send of <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4A90>>
                 │    │   │      └ <bound method RequestResponseCycle.receive of <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4...
                 │    │   └ {'type': 'http', 'asgi': {'version': '3.0', 'spec_version': '2.1'}, 'http_version': '1.1', 'server': ('127.0.0.1', 80), 'clie...
                 │    └ <fastapi.applications.FastAPI object at 0x000001BCFC722710>
                 └ <uvicorn.middleware.proxy_headers.ProxyHeadersMiddleware object at 0x000001BCFC722BA8>
  File "C:\Program Files\Python37\lib\site-packages\fastapi\applications.py", line 149, in __call__
    await super().__call__(scope, receive, send)
                           │      │        └ <bound method RequestResponseCycle.send of <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4A90>>
                           │      └ <bound method RequestResponseCycle.receive of <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4...
                           └ {'type': 'http', 'asgi': {'version': '3.0', 'spec_version': '2.1'}, 'http_version': '1.1', 'server': ('127.0.0.1', 80), 'clie...
  File "C:\Program Files\Python37\lib\site-packages\starlette\applications.py", line 102, in __call__
    await self.middleware_stack(scope, receive, send)
          │    │                │      │        └ <bound method RequestResponseCycle.send of <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4A90>>
          │    │                │      └ <bound method RequestResponseCycle.receive of <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4...
          │    │                └ {'type': 'http', 'asgi': {'version': '3.0', 'spec_version': '2.1'}, 'http_version': '1.1', 'server': ('127.0.0.1', 80), 'clie...
          │    └ <starlette.middleware.errors.ServerErrorMiddleware object at 0x000001BCFC7B8FD0>
          └ <fastapi.applications.FastAPI object at 0x000001BCFC722710>
  File "C:\Program Files\Python37\lib\site-packages\starlette\middleware\errors.py", line 181, in __call__
    raise exc from None
  File "C:\Program Files\Python37\lib\site-packages\starlette\middleware\errors.py", line 159, in __call__
    await self.app(scope, receive, _send)
          │    │   │      │        └ <function ServerErrorMiddleware.__call__.<locals>._send at 0x000001BCFC72AE18>
          │    │   │      └ <bound method RequestResponseCycle.receive of <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4...
          │    │   └ {'type': 'http', 'asgi': {'version': '3.0', 'spec_version': '2.1'}, 'http_version': '1.1', 'server': ('127.0.0.1', 80), 'clie...
          │    └ <starlette.middleware.cors.CORSMiddleware object at 0x000001BCFC7B8F60>
          └ <starlette.middleware.errors.ServerErrorMiddleware object at 0x000001BCFC7B8FD0>
  File "C:\Program Files\Python37\lib\site-packages\starlette\middleware\cors.py", line 84, in __call__
    await self.simple_response(scope, receive, send, request_headers=headers)
          │    │               │      │        │                     └ Headers({'host': '127.0.0.1', 'connection': 'keep-alive', 'content-length': '295', 'accept': 'application/json', 'user-agent'...
          │    │               │      │        └ <function ServerErrorMiddleware.__call__.<locals>._send at 0x000001BCFC72AE18>
          │    │               │      └ <bound method RequestResponseCycle.receive of <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4...
          │    │               └ {'type': 'http', 'asgi': {'version': '3.0', 'spec_version': '2.1'}, 'http_version': '1.1', 'server': ('127.0.0.1', 80), 'clie...
          │    └ <function CORSMiddleware.simple_response at 0x000001BCEE53DC80>
          └ <starlette.middleware.cors.CORSMiddleware object at 0x000001BCFC7B8F60>
  File "C:\Program Files\Python37\lib\site-packages\starlette\middleware\cors.py", line 140, in simple_response
    await self.app(scope, receive, send)
          │    │   │      │        └ functools.partial(<bound method CORSMiddleware.send of <starlette.middleware.cors.CORSMiddleware object at 0x000001BCFC7B8F60...
          │    │   │      └ <bound method RequestResponseCycle.receive of <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4...
          │    │   └ {'type': 'http', 'asgi': {'version': '3.0', 'spec_version': '2.1'}, 'http_version': '1.1', 'server': ('127.0.0.1', 80), 'clie...
          │    └ <starlette.exceptions.ExceptionMiddleware object at 0x000001BCFC7B8E48>
          └ <starlette.middleware.cors.CORSMiddleware object at 0x000001BCFC7B8F60>
  File "C:\Program Files\Python37\lib\site-packages\starlette\exceptions.py", line 82, in __call__
    raise exc from None
  File "C:\Program Files\Python37\lib\site-packages\starlette\exceptions.py", line 71, in __call__
    await self.app(scope, receive, sender)
          │    │   │      │        └ <function ExceptionMiddleware.__call__.<locals>.sender at 0x000001BCFC7C18C8>
          │    │   │      └ <bound method RequestResponseCycle.receive of <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4...
          │    │   └ {'type': 'http', 'asgi': {'version': '3.0', 'spec_version': '2.1'}, 'http_version': '1.1', 'server': ('127.0.0.1', 80), 'clie...
          │    └ <fastapi.routing.APIRouter object at 0x000001BCFC7220F0>
          └ <starlette.exceptions.ExceptionMiddleware object at 0x000001BCFC7B8E48>
  File "C:\Program Files\Python37\lib\site-packages\starlette\routing.py", line 550, in __call__
    await route.handle(scope, receive, send)
          │     │      │      │        └ <function ExceptionMiddleware.__call__.<locals>.sender at 0x000001BCFC7C18C8>
          │     │      │      └ <bound method RequestResponseCycle.receive of <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4...
          │     │      └ {'type': 'http', 'asgi': {'version': '3.0', 'spec_version': '2.1'}, 'http_version': '1.1', 'server': ('127.0.0.1', 80), 'clie...
          │     └ <function Route.handle at 0x000001BCEE4FF6A8>
          └ <fastapi.routing.APIRoute object at 0x000001BCFC7B8E80>
  File "C:\Program Files\Python37\lib\site-packages\starlette\routing.py", line 227, in handle
    await self.app(scope, receive, send)
          │    │   │      │        └ <function ExceptionMiddleware.__call__.<locals>.sender at 0x000001BCFC7C18C8>
          │    │   │      └ <bound method RequestResponseCycle.receive of <uvicorn.protocols.http.h11_impl.RequestResponseCycle object at 0x000001BCFC7D4...
          │    │   └ {'type': 'http', 'asgi': {'version': '3.0', 'spec_version': '2.1'}, 'http_version': '1.1', 'server': ('127.0.0.1', 80), 'clie...
          │    └ <function request_response.<locals>.app at 0x000001BCFC7C1A60>
          └ <fastapi.routing.APIRoute object at 0x000001BCFC7B8E80>
  File "C:\Program Files\Python37\lib\site-packages\starlette\routing.py", line 41, in app
    response = await func(request)
                     │    └ <starlette.requests.Request object at 0x000001BCFC7D4588>
                     └ <function get_request_handler.<locals>.app at 0x000001BCFC7C19D8>
  File "C:\Program Files\Python37\lib\site-packages\fastapi\routing.py", line 213, in app
    is_coroutine=is_coroutine,
                 └ True
  File "C:\Program Files\Python37\lib\site-packages\fastapi\routing.py", line 113, in serialize_response
    exclude_none=exclude_none,
                 └ False
  File "C:\Program Files\Python37\lib\site-packages\fastapi\routing.py", line 65, in _prepare_response_content
    exclude_none=exclude_none,
                 └ False
  File "pydantic\main.py", line 386, in pydantic.main.BaseModel.dict
  File "pydantic\main.py", line 706, in _iter
  File "pydantic\main.py", line 623, in pydantic.main.BaseModel._get_value
  File "pydantic\main.py", line 623, in pydantic.main.BaseModel._get_value
  File "pydantic\main.py", line 623, in pydantic.main.BaseModel._get_value
  [Previous line repeated 722 more times]
  File "pydantic\main.py", line 605, in pydantic.main.BaseModel._get_value
  File "C:\Program Files\Python37\lib\abc.py", line 139, in __instancecheck__
    return _abc_instancecheck(cls, instance)
           │                  │    └ 8
           │                  └ <class 'pydantic.main.BaseModel'>
           └ <built-in function _abc_instancecheck>
RecursionError: maximum recursion depth exceeded in comparison```