Nest Hello has stopped working

Hello.

A few days ago my Nest Hello stream stopped working. Ring press events work but video is not displayed. I have not modified any of the integration. I only see these lines in the log. Do this also happen to someone else? Do you know why it can happen?

Thanks in advance.

2021-03-23 10:54:27 INFO (Thread-7) [google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager] Observed non-terminating stream error 503 The service was unable to fulfill your request. Please try again. [code=8a75]

2021-03-23 10:54:27 INFO (Thread-7) [google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager] Observed recoverable stream error 503 The service was unable to fulfill your request. Please try again. [code=8a75]

2021-03-23 10:54:27 INFO (Thread-7) [google.api_core.bidi] Re-established stream

2021-03-23 10:54:27 INFO (Thread-ConsumeBidirectionalStream) [google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager] Observed non-terminating stream error 503 The service was unable to fulfill your request. Please try again. [code=8a75]

2021-03-23 10:54:27 INFO (Thread-ConsumeBidirectionalStream) [google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager] Observed recoverable stream error 503 The service was unable to fulfill your request. Please try again. [code=8a75]