Power BI Model based on Databricks Serverless SQL Warehouse refresh failure - ODBC: ERROR [HY000]

Hello,

We have some Power BI semantic models that are refreshed based on data from Azure Databricks, served by Serverless SQL Warehouse compute. We have Power BI VNet gateway connection set up.

It has been working well, until recently, the refreshes are failing, with error message like this...

"

Data source error: {"error":{"code":"DM_GWPipeline_Gateway_MashupDataAccessError","pbi.error":{"code":"DM_GWPipeline_Gateway_MashupDataAccessError","parameters":{},"details":[{"code":"DM_ErrorDetailNameCode_UnderlyingErrorCode","detail":{"type":1,"value":"-2147467259"}},{"code":"DM_ErrorDetailNameCode_UnderlyingErrorMessage","detail":{"type":1,"value":"ODBC: ERROR [HY000] [Microsoft][ThriftExtension] (14) Unexpected response from server during a HTTP connection: connect() failed: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.."}},{"code":"DM_ErrorDetailNameCode_UnderlyingHResult","detail":{"type":1,"value":"-2147467259"}},{"code":"Microsoft.Data.Mashup.ErrorCode","detail":{"type":1,"value":"10478"}},{"code":"Microsoft.Data.Mashup.ValueError.DataSourceKind","detail":{"type":1,"value":"Databricks"}},{"code":"Microsoft.Data.Mashup.ValueError.DataSourcePath","detail":{"type":1,"value":"{\"host\":\"adb-<xxxxxxxxxxxxxx>.<xx>.azuredatabricks.net\",\"httpPath\":\"\\/sql\\/1.0\\/warehouses\\/<xxxxxxxxxxxxxxxxxx>\"}"}},{"code":"Microsoft.Data.Mashup.ValueError.NativeError","detail":{"type":1,"value":"14"}},{"code":"Microsoft.Data.Mashup.ValueError.OdbcErrors","detail":{"type":1,"value":"#table({\"SQLState\", \"NativeError\", \"Message\"}, {})"}},{"code":"Microsoft.Data.Mashup.ValueError.Reason","detail":{"type":1,"value":"DataSource.Error"}},{"code":"Microsoft.Data.Mashup.ValueError.SQLState","detail":{"type":1,"value":"HY000"}}],"exceptionCulprit":1}}}

"

(screenshot also attached)

I wonder if anyone has ever encountered this issue? 

And what solution you have found for this?

Thank you in advance for sharing your experiences and insights!