Transport-level Error using Dataflows Gen2

[AnthonyGenovese]

We are starting to receive the following error when running a dataflow gen 2 to the from on prem SQL Server to the lakehouse.

Mashup Exception Error Couldn't refresh the entity because of an issue with the mashup document MashupException.Error: Error in replacing table's content with new data in a version: #{0}. Details: [DataSourceKind = "SQL", DataSourcePath = "XXX", Message = "A transport-level error has occurred when receiving results from the server. (provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.)", ErrorCode = -2146232060, Number = 10054, Class = 20] GatewayObjectId: 0e14aac5-92c6-427b-94de-99eb9fb12b12

[AnthonyGenovese]

We have already solved for the firewall issue in June/July. I have confirmed we can connect to the sql endpoint just fine.