Puppeteer: Cannot find app in {value}
The mounted macOS browser image contains no expected .app bundle.
The mounted macOS browser image contains no expected .app bundle.
Error message
Cannot find app in {value}
{value} is replaced by the value shown in your error message.
How this error happens
A macOS browser DMG can mount successfully but contain no expected .app bundle, for example when a mirror serves the wrong image.
The command demonstrates the installation workflow; it only fails when the archive or environment has the condition described above.
npx puppeteer browsers install
How to fix
Check the extraction or mount error first, ensure there is enough disk space, and retry package-managed installation into a separate writable cache.
PUPPETEER_CACHE_DIR=/absolute/path/new-browser-cache \
npx puppeteer browsers install
Things to keep in mind
Use the same cache location when launching. If a mirror supplied the wrong file, restore the trusted browser archive source before retrying. Do not delete a broad cache or unmount an unrelated volume.