UI doesn't open on mac os Big Sur Version 11.4

I’m using Mac OS Big Sur Version 11.4
after starting orion, and successfull applictaion startup. I see the below error message upon accessing the UI at http://127.0.0.1:4200

prefect orion start


| _ \ _ \ | | / | | / _ | _ _ / _ | | |
| / / || || | ( | | | () | /| | () | .` |
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Configure Prefect to communicate with the server with:

INFO: Started server process [54594]
INFO: Waiting for application startup.
INFO: Application startup complete.
INFO: Uvicorn running on http://127.0.0.1:4200 (Press CTRL+C to quit)
INFO: 127.0.0.1:63779 - “GET / HTTP/1.1” 404 Not Found
INFO: 127.0.0.1:63779 - “GET /favicon.ico HTTP/1.1” 404 Not Found

Do you happen to have another open process for Orion already? Could you restart your laptop, create a new Conda virtual environment, install Prefect there and start Orion in a fresh terminal session in that conda environment?

An older Mac version shouldn’t be an issue in this case.

Alternatively, you can sign up for Prefect Cloud. Once logged in, create a workspace and an API key and login from your terminal:

prefect profile create dev
prefect profile use dev
prefect config set PREFECT_LOGGING_LEVEL=DEBUG
prefect config set PREFECT_API_KEY=your_api_key
prefect cloud workspace set --workspace "your_account/dev"

This way, you don’t need to spin up Orion locally and you can use the free Cloud version to get started.