# Troubleshooting Initialization

Troubleshoot common initialization issues and apply solutions.

When following steps in [Getting Started](https://www.airship.com/docs/developer/sdk-integration/react-native/installation/getting-started/) or [Advanced Configuration](https://www.airship.com/docs/developer/sdk-integration/react-native/installation/advanced-configuration/), if you don't see a channel ID in the logs or encounter errors during initialization, review the following common problems and solutions.

## Installation Errors

If you encounter errors during installation:

- Verify that you're using a compatible version of React Native. See [Requirements](https://www.airship.com/docs/developer/sdk-integration/react-native/installation/getting-started/#requirements) in *Getting Started*.
- Ensure all native dependencies are properly linked.
- Check that your iOS and Android projects are correctly configured.

## Initialization Errors

If you encounter errors during SDK initialization:

- Verify your credentials in the Airship dashboard. The credentials used by `takeOff` are your Airship project's [App Key](https://www.airship.com/docs/reference/glossary/#app_key) and [App Secret](https://www.airship.com/docs/reference/glossary/#app_secret). To find them, select the dropdown menu () next to your project name, and then **Project details**.
- Check that `takeOff` is called correctly in your app.
- Ensure both iOS and Android native modules are properly installed.

## Expo: iOS Build Errors with Missing Headers

If you encounter iOS build errors with messages like `'tuple' file not found`, `'iosfwd' file not found`, or `'generated/RNAirshipSpec/RNAirshipSpec.h' file not found`, this is typically caused by a compatibility issue between Expo and React Native's C++ headers.

This usually happens when:

- You're using `use_frameworks! :linkage => :static` in your Podfile
- Your Expo SDK version has an incompatible `expo-dev-menu` dependency

To fix this issue:

- Add a resolution to your `package.json` to force a compatible version:

  ```json
{
    "resolutions": {
      "expo-dev-menu": "X.X.X" // Replace with compatible version (e.g., 6.0.21)
    }
  }
```


- Or update `expo-dev-client` to the latest version.
- Run `npm install` and `pod install` again.

If you're running Firebase alongside Airship, see [Extending the FirebaseMessagingService](https://www.airship.com/docs/developer/sdk-integration/android/installation/getting-started/#extending-the-firebasemessagingservice) for Android configuration.