AttributeError: 'Request' object has no attribute '_body'

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Example Code

from fastapi import FastAPI
import uvicorn
app = FastAPI()

@app.get('/chain_detail/')
def read_chain_detail():    
    return 'hello world'

if __name__ == '__main__':    
    uvicorn.run(app=app, host="127.0.0.1", port=8000)

Description

I got “AttributeError ‘Request’ object has not attribute ‘_body’” error. As GET request doesn’t have body, I have no idea how can I fix it.

Operating System

Windows

Operating System Details

Windows 10 Version No. 1809

FastAPI Version

0.73.0

Python Version

3.8.8

Additional Context

No response

[jujumilk3]

In my case there’s no problem like you. Just try to install fastAPI by use pip install "fastapi[all]

[tianzhipengfei]

Well, I think your original posted code has typing mistakes. I copied the code and ran it. It worked perfectly. See below:

from fastapi import FastAPI
import uvicorn # This line in your code just joined with the next line which is why I suggested to use uvicornapp in decorator.
app = FastAPI()


@app.get('/chain_detail/')
def read_chain_detail():
    return 'hello world'


if __name__ == '__main__':
    uvicorn.run(app=app, host="127.0.0.1", port=8000)

Oh, I got it, and modified it. Thanks for that. But it is not the point which caused the error. I just used chrome to visit http://127.0.0.1:8000/chain_detail/ . One more thing, I can see the correct response in chrome. But at the same time, I can see the error in console.