The build is failing because FBLPromises.framework lacks bitcode.

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This error occurs when the FBLPromises.framework does not have bitcode enabled. Bitcode is a feature in iOS that allows apps to be compiled and optimized for different architectures. Enabling bitcode ensures that the app can run on different devices with different architectures.

To fix this error, you can try the following steps:

1. Update to the latest version of FBLPromises.framework that supports bitcode.
2. If the latest version does not support bitcode, you can recompile the framework with bitcode enabled.
3. If recompiling the framework is not possible, you can disable bitcode in your Xcode project by going to Build Settings and setting "Enable Bitcode" to "No".

Note that disabling bitcode may affect app performance and compatibility across different devices, so it's important to test thoroughly before releasing the app to the App Store.