IOS standalone build failed, doesn't give any explanation

The build number is: 46441e49-c236-40cf-9cbe-191757977019

I am running the expo build:os -t archive command and at first I get this error:

There was an error while trying to write to Gemfile.lock. It is likely that you need to allow write permissions for the file at path: /usr/local/lib/node_modules/expo-cli/node_modules/@expo/traveling-fastlane-darwin/dist/lib/vendor/Gemfile.lock.

After that however it continues through the process of authenticating so I didn’t think it was an issue. It then starts building and eventually starts the build queueing after a while however it just says Standalone build failed.

expo diagnostics:
Expo CLI 3.23.3 environment info: System: OS: macOS 10.15.6 Shell: 5.7.1 - /bin/zsh Binaries: Node: 14.5.0 - /usr/local/bin/node npm: 6.14.5 - /usr/local/bin/npm IDEs: Xcode: 11.6/11E708 - /usr/bin/xcodebuild npmPackages: expo: ^38.0.9 => 38.0.9 react: 16.13.1 => 16.13.1 react-dom: 16.13.1 => 16.13.1 react-native: => 0.62.2 react-native-web: ^0.13.5 => 0.13.5 react-navigation: ^4.4.0 => 4.4.0 npmGlobalPackages: expo-cli: 3.23.3

Hey @sarcodo,

Were you able to successfully build yet? If not, could you try creating a new project and seeing if that will build?


Hi @adamjnav,

I haven’t been able to successfully build my main project yet no. I’ve just created a brand new project and built it and that builds fine (Build id: 1bb1217a-7ddb-4f3f-ba23-f75527bfb192).

Any idea what might be happening to the main project?


I found out what the issue is, weird one but it seems that the icon was causing the problem. I used this site: and that fixed it.

Glad you were able to get things sorted out. Thanks for sharing what the issue was with us.

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