start-session fails sometimes

All Session Manager prerequisites are complete and it's worked before.

Your session has been terminated for the following reasons: ----------ERROR------- Setting up data channel with id XXXXX-0a2b767b33e3ba395 failed: failed to create websocket for datachannel with error: CreateDataChannel failed with no output or error: createDataChannel request failed: failed to sign the request: shared credentials are already expired, they were retrieved at 2023-05-22T10:03:45Z and expired at 2023-05-22T11:07:14Z

Start by reproducing the start-session failure and tracing Session Manager data-channel setup through the shared-credentials signing path. Compare the reported expiration times with the credential refresh behavior; done means identifying the cause of the expired-credentials failure and demonstrating a successful session start.

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