Troubleshooting Local Launch of Arize Phoenix without Cloud Integration

Hi, if i have installed arize-phoenix-otel and then integrated with langgraph code it is able to trace however if i want to launch phoenix in local and do not use phoenix cloud via setting phoenix headers,api_key etc as env variable, Then what should i do? And px.launch_app() is not working , is it built to show in notebooks only? Even if i do install arize-phoenix package then it throws error post running the python file.