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···+Make sure to also set the `COOKIE_SECRET` in your environment variables (`.env` file), which is used to sign session cookies. You can generate a random string for this:+Finally, set the `PUBLIC_URL` to the URL where your app will be accessible. This is used for OAuth client ID and other configurations.+> You can use services like [ngrok](https://ngrok.com/) to expose your local server to the internet for testing purposes. Just set the `PUBLIC_URL` to the ngrok URL.