This error can occur when you went quickly through the steps, and the Postgres database server has not been able to deliver a message yet to the Event Hub. There is a delay of 2-5 minutes for log messages to reach the Event Hub.
We recommend waiting 5 minutes, and then retrying. You can verify whether the Event Hub has received any messages by navigating to it in the Azure Portal.
If this error persists, verify that you've configured the diagnostic setting in Step 3 correctly.
This occurs when the collector can't access the Azure Event Hub API.
Review whether you have followed Step 1 correctly for Managed Identity, or have setup the Azure AD application as documented below.
This error occurs when there is no authentication configured - when using Managed Identity, verify that you have actually assigned the identity to your VM.
Double check your Event Hub namespace and Event Hub name that you have configured in Step 4.
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