The self-hosted runner 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.

Failed to restore gradle-transforms-v2-1943e43fe530db972f3f750f4ef26fd7: Error: "/usr/bin/tar" failed with error: The process '/usr/bin/tar' failed with exit code 2

Failed to restore gradle-dependencies-v2-be2c1c91f830af61154d46d311e90878: Error: "/usr/bin/tar" failed with error: The process '/usr/bin/tar' failed with exit code 2

Failed to restore gradle-wrapper-zips-v2-ef43a8e2ea38ce83c4462b7d7ca3782b: Error: "/usr/bin/tar" failed with error: The process '/usr/bin/tar' failed with exit code 2