Error refreshing in Service, but not on Desktop.

Specific error message: 

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":"The underlying connection was closed: An unexpected error occurred on a send."}},{"code":"DM_ErrorDetailNameCode_UnderlyingHResult","detail":{"type":1,"value":"-2147467259"}},{"code":"Microsoft.Data.Mashup.ValueError.Detail","detail":{"type":1,"value":"https://ulteig.crm.dynamics.com/api/data/v9.2"}},{"code":"Microsoft.Data.Mashup.ValueError.Reason","detail":{"type":1,"value":"DataSource.Error"}}],"exceptionCulprit":1}}} Table: DIMClient.
Cluster URI: WABI-US-NORTH-CENTRAL-H-PRIMARY-redirect.analysis.windows.net
Activity ID: 7a6f91fb-240e-45c6-a683-09bdfd8bad7c
Request ID: b2456a60-6bd0-6ff3-8e43-945392b27e25
Time: 2023-10-04 16:46:16Z

This was fine for months, then today suddenly started kicking this error. 



I've tried:

• Refreshing in Desktop (is fine)
• Refreshing in a different worksapce (error)
• Switching between using the datagateway, vs not, fo rthe above mentioned datasource - no difference.