> ## Documentation Index
> Fetch the complete documentation index at: https://docs.appcharge.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Troubleshooting

## Error codes

| Error Code | Title                          | Description                          | Troubleshoot                                                                                         |
| ---------- | ------------------------------ | ------------------------------------ | ---------------------------------------------------------------------------------------------------- |
| `2000`     | `BOOT_INITIALIZATION`          | HTTP boot request error              | Verify your configurations. Ensure you have a valid publisher token and the correct environment set. |
| `3002`     | `PURCHASE_CLOSED_AND_CANCELED` | Purchase closed and canceled         | The player closed the checkout window, causing both the purchase and the session to be canceled.     |
| `3003`     | `PURCHASE_FAILED`              | Purchase failed                      | Check logs or error event data to determine the reason for the failure.                              |
| `1006`     | `HTTP_PRICE_POINTS_REQUEST`    | HTTP price points request error      | Ensure that at least one price point is configured.                                                  |
| `1007`     | `HTTP_BROWSER_CONNECTION`      | Browser CORS - Operation not allowed | The request was blocked due to the domain's CORS policy or Internet connection issues.               |

## Additional errors

### "Refused to connect" message in iframe

If you encounter this error when loading the checkout, we recommend running the Unity WebGL build on your custom server. Using Unity's **Build and Run** option may cause this issue due to the way certain versions of the Unity server handle iframe connections.