Could not send request to LS Audio/Video Authentication Service to get authentication tokens. Machine Fqdn %1 with GRUU (%2) ...

Could not send request to LS Audio/Video Authentication Service to get authentication tokens.

Machine Fqdn %1 with GRUU (%2) Type %3 
Continue to retry.
Cause: If the other machine is removed from the topology or is in draining or is stopped, this is expected. Otherwise there could be some network issues.
Resolution:
If this is unexpected, verify that the Front End service in running on your server. Ensure that LS Audio/Video Authentication service is running on the specified server.

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