The self-hosted runner: chanzuckerberg-arm64-si-arc-prod-dr866-mbcwh lost communication with the server. Verify the machine is running and has a healthy network connection. Anything in your workflow that terminates the runner process, starves it for CPU/Memory, or blocks its network access can cause this error.

Restore cache failed: Dependencies file is not found in /runner/_work/happy/happy. Supported file pattern: go.sum