Vercel’s build output API sometimes generates opaque cache keys. If a deployment alias points to a non-existent build, you might see an error like: Error: d9k19k not found in build cache .
April 16, 2026 Status: Under Investigation / Draft Reference ID: [Insert Internal Ticket Number] 1. Executive Summary d9k19k not found
To avoid this error in the future, keep your development tools updated to stable releases rather than beta versions. Regularly back up your configuration files, and use version control (like GitHub ) to track changes in your project’s environment settings. Android NDK missing - Unity Discussions Vercel’s build output API sometimes generates opaque cache