---
title: Known issues
canonical: https://developer.unico.io/dual-api/developers/sdks-and-tools/flutter/resources/known-issues
locale: en
generated_by: markdown-export
---

- **Release build fails but debug works** — likely an obfuscation issue on the Android side. The native SDKs cannot be obfuscated. [Review ProGuard/DexGuard rules](/developers/sdks-and-tools/flutter/installation/specific-setup).

- **`pod install` fails after updating the plugin** — remove `ios/Podfile.lock` and run `pod install` again from the `ios/` directory.

- **Bitcode error in app distribution using Xcode 16** — after the official release of Xcode 16 (Sep 17, 2024), distribution to the App Store may be blocked due to bitcode usage in two internal dependencies (`DeviceProfiling` and `UnicoSdkLogger`) when using CocoaPods. Apply the workaround below in your `ios/Podfile` until a permanent fix ships:

```ruby
post_install do |installer|
  bitcode_strip_path = `xcrun --find bitcode_strip`.chop!
  def strip_bitcode_from_framework(bitcode_strip_path, framework_relative_path)
    framework_path = File.join(Dir.pwd, framework_relative_path)
    command = "#{bitcode_strip_path} #{framework_path} -r -o #{framework_path}"
    puts "Stripping bitcode: #{command}"
    system(command)
  end

  framework_paths = [
    "Pods/unicocheck-ios/DeviceProfiling.xcframework/ios-arm64/DeviceProfiling.framework/DeviceProfiling",
    "Pods/unicocheck-ios/UnicoSdkLogger.xcframework/ios-arm64/UnicoSdkLogger.framework/UnicoSdkLogger"
  ]

  framework_paths.each do |framework_relative_path|
    strip_bitcode_from_framework(bitcode_strip_path, framework_relative_path)
  end
end
```

If `post_install do |installer|` is not present, add it before the last `end`.

**Sources:** [Bitrise](https://discuss.bitrise.io/t/xcode-16-known-issues/24484), [Xcode 16 release notes](https://developer.apple.com/documentation/xcode-release-notes/xcode-16-release-notes), [Stack Overflow](https://stackoverflow.com/questions/78993520/invalid-executable-the-executable-appname-app-frameworks-hermes-framework-herm).

- **Errors via platform channel** — typically indicate incomplete configuration of the underlying platform. Review [Specific setup](/developers/sdks-and-tools/flutter/installation/specific-setup).

- **Attempt to use bridges instead of the official plugin** — not supported. Migrate to the official plugin.