Instance task acknowledgment request has failed (ID: 9ff2acb8-0a70-4f7c-bdd0-e89514c28127, HTTP status code: 404)

The self-hosted runner: 8627bdce-64ea-427a-bf9b-c4133e5eb64e 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.

Instance stop request has failed (HTTP status code: 500, body: Failed to stop backend instance (reason: backend provider not found with instance key: InstanceHashMapKey("e00ccea54ba5034cd131c8529cb2606336efad52", "8627bdce-64ea-427a-bf9b-c4133e5eb64e")))

Instance stop request has failed (HTTP status code: 500, body: Failed to stop backend instance (reason: backend provider not found with instance key: InstanceHashMapKey("e00ccea54ba5034cd131c8529cb2606336efad52", "8627bdce-64ea-427a-bf9b-c4133e5eb64e")))

Instance stop request has failed (HTTP status code: 500, body: Failed to stop backend instance (reason: backend provider not found with instance key: InstanceHashMapKey("e00ccea54ba5034cd131c8529cb2606336efad52", "8627bdce-64ea-427a-bf9b-c4133e5eb64e")))

Instance stop request has failed after 3 attempts

Cannot read properties of undefined (reading 'task_id')

ubuntu-latest pipelines will use ubuntu-24.04 soon. For more details, see https://github.com/actions/runner-images/issues/10636