I am trying to run FastAPI application using uvicorn and I am using Python for this. After running the command "uvicorn app.main:app --host 0.0.0.0 --port 8000 --log-level debug", I am able to get the "Hello" message while accessing the URL but the moment I try to access the swagger document it shows the below error:
Fetch error:
Failed to fetch http://0.0.0.0:8000/openapi.json
Fetch error:
Possible cross-origin (CORS) issue? The URL origin (http://0.0.0.0:8000) does not match the page (http://127.0.0.1:8000). Check the server returns the correct 'Access-Control-Allow-*' headers.
Could anyone please help as I am new to this and kind of struggling.
I am expecting the swagger document to load successfully.
You can try the following things:
uvicorn app.main:app --host 0.0.0.0 --port 8000 --log-level debug
You can access the service now from any IP-Adress. Maybe also check your firewall settings. You can try to accept incoming calls from the port 8000 (outcoming and incoming rules)
If you need to access the Swagger UI from a different origin or domain, you may need to configure CORS in your FastAPI application. You can do this by using the fastapi.middleware.cors.CORSMiddleware: