fastapi - 💡(How to fix) Fix Dependency keeps going after response returns when there exists any backgroud tasks. [1 participants]

import asyncio

from fastapi import Depends, BackgroundTasks, FastAPI
from fastapi.responses import PlainTextResponse


app = FastAPI()

async def dep():
    yield
    print("dep done")

async def task():
    await asyncio.sleep(5)
    print("task done")

@app.get("/test", response_class=PlainTextResponse, tags=["test"], dependencies=[Depends(dep)])
async def test(bk: BackgroundTasks):
    bk.add_task(task)
    return "OK"