I read the article “Building Standalone Apps” and build standalone app according to the article.
https://docs.expo.io/versions/latest/guides/building-standalone-apps.html
$ exp build:ios
[exp] Making sure project is set up correctly...
[exp] Warning: Not using the Expo fork of react-native. See https://docs.expo.io/.
[exp] Your project looks good!
[exp] Checking if current build exists...
[exp] No currently active or previous builds for this project.
[exp] Checking for existing Apple credentials...
[exp] Validating Apple credentials...
[exp] Credentials valid.
[exp] Validating distribution certificate...
[exp] Validating app id...
[exp] Validating push certificate...
[exp] Starting build process...
[exp] Unable to find an existing exp instance for this directory, starting a new one...
[exp] Warning: Not using the Expo fork of react-native. See https://docs.expo.io/.
[exp] Starting React Native packager...
[exp] Scanning 780 folders for symlinks in /<APP DIRECTORY>/node_modules (7ms)
[exp] Loading dependency graph.
[exp] Running packager on port 19001.
[exp] Dependency graph loaded.
[exp] Publishing...
[exp] Building iOS bundle
[exp] Finished building JavaScript bundle in 19435ms.
[exp] Building Android bundle
[exp] Finished building JavaScript bundle in 17321ms.
[exp] Analyzing assets
[exp] Finished building JavaScript bundle in 11339ms.
[exp] Finished building JavaScript bundle in 12162ms.
[exp] Uploading assets
[exp] No assets changed, skipped.
[exp] Uploading JavaScript bundles
[exp] Published
[exp] Your URL is
https://exp.host/@XXXXX/YYYY
[exp] Building...
[exp] Build started, it may take a few minutes to complete.
[exp] Build ID: f84cee29-546d-43d8-8bba-065c6b9eb7c7
[exp] Run `exp build:status` to monitor it.
And I checked the status and got the following error.
$ exp build:status
[exp] Making sure project is set up correctly...
[exp] Warning: Not using the Expo fork of react-native. See https://docs.expo.io/.
[exp] Your project looks good!
[exp] Checking if current build exists...
[exp] ============
[exp] Build Status
[exp] ============
[exp] iOS: There was an error with this build.
The build ID is f84cee29-546d-43d8-8bba-065c6b9eb7c7
.
Can you search for the cause of error?