SAP HANA - Kerberos error when refreshing in PBI Service

Last night, we started getting errors refreshing SAP HANA datasets via the gateway. We use the SSO advanced option (SSO for DQ and Import). Not using SSO works fine. The failures started immediately after getting an alert that there was a problem with the PBI service. Did anything change last night?

{"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":"<pi>ODBC: ERROR [08S01] [SAP AG][LIBODBCHDB DLL][HDBODBC] Communication link failure;-10709 Connection failed (RTE:[-1] Kerberos error. Major: \"Miscellaneous failure [851968]\", minor: \"The logon attempt failed\r\n [2148074252/-2146893044]\" (SERVER:PORT HIDDEN))</pi>"}},{"code":"DM_ErrorDetailNameCode_UnderlyingHResult","detail":{"type":1,"value":"-2147467259"}},{"code":"Microsoft.Data.Mashup.ValueError.DataSourceKind","detail":{"type":1,"value":"SapHana"}},{"code":"Microsoft.Data.Mashup.ValueError.DataSourcePath","detail":{"type":1,"value":"SERVER:PORT HIDDEN"}},{"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"}}],"exceptionCulprit":1}}} Table: Query1.