First Check

• I added a very descriptive title to this issue.
• I used the GitHub search to find a similar issue and didn't find it.
• I searched the FastAPI documentation, with the integrated search.
• I already searched in Google "How to X in FastAPI" 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 FastAPI but to Pydantic.
• I already checked if it is not related to FastAPI but to Swagger UI.
• I already checked if it is not related to FastAPI but to ReDoc.

Commit to Help

• I commit to help with one of those options 👆

Example Code

main.py

....
@app.post("/files:upload_homework")
async def create_file():
    ......

--------------------    
$ curl -X POST "http://127.0.0.1:8000/files:upload_homework"
{"detail":"Not Found"}%

------------
I run my fastapi App below command:

uvicorn main:app --host 0.0.0.0 --port 80

Description

It works in below packages:

$ pip freeze
anyio==3.5.0
asgiref==3.5.0
click==8.0.4
fastapi==0.75.0
h11==0.13.0
httptools==0.4.0
idna==3.3
Jinja2==3.0.3
MarkupSafe==2.1.1
pydantic==1.9.0
python-dotenv==0.19.2
python-multipart==0.0.5
pytz==2022.1
PyYAML==6.0
six==1.16.0
sniffio==1.2.0
starlette==0.17.1
typing-extensions==4.1.1
uvicorn==0.17.6
uvloop==0.16.0
watchgod==0.8.1
websockets==10.2

It can not works below packages:

$ pip freeze                                                
anyio==3.5.0
asgiref==3.5.0
click==8.0.4
fastapi==0.77.1
h11==0.13.0
httptools==0.4.0
idna==3.3
Jinja2==3.0.3
MarkupSafe==2.1.1
pydantic==1.9.0
python-dotenv==0.19.2
python-multipart==0.0.5
pytz==2022.1
PyYAML==6.0
six==1.16.0
sniffio==1.2.0
starlette==0.19.1
typing-extensions==4.1.1
uvicorn==0.17.6
uvloop==0.16.0
watchgod==0.8.1
websockets==10.2

Operating System

Linux, macOS

Operating System Details

No response

FastAPI Version

0.77.1

Python Version

Python 3.9.12

Additional Context

No response