configuration error

ConfigError: no configuration file

Base README.md template:

---
title: {{title}}
emoji: {{emoji}}
colorFrom: {{colorFrom}}
colorTo: {{colorTo}}
sdk: {{sdk}}
sdk_version: "{{sdkVersion}}"
app_file: app.py
pinned: false
---

Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference