2727683 - Unable to retrieve data from the datasource error appears in SAP Analytics Cloud story based on live data connection

• {"code":null,"message":"Internal Server Error","details":null} message arises in SAP Analytics Cloud (SAC) while trying to examine data in a story on top of Live BW model.
• Widgets in SAC show: "Unable to retrieve data from the datasource".
• Complex BW query is being executed with large amount of data, but no dump or HTTP(S) error seen on NW backend.
• Errors coming in Chrome Developer Tool:
• GetResponse requests return with status code: "500 Internal Server Error"
• and with error message "500 Connection Timed Out"

• SAP Analytics Cloud
• Live Data model on a NetWeaver based backend system

SAP Cloud for Planning, sc4p, c4p, cforp, cloudforplanning, EPM-ODS, Cloud for Analytics, Cloud4Analytics, CloudforAnalytics, Cloud 4 Planning, BOC, SAPBusinessObjectsCloud, BusinessObjectsCloud, BOBJcloud, BOCloud., SAC, SAP AC, Cloud-Analytics, CloudAnalytics, SAPCloudAnalytics, code, null, message, Internal Server Error, details, null,large , ICM, PROCTIMEOUT, HTTP, icm/conn_timeout , KBA , LOD-ANA , SAP Analytics Cloud (SAC) , LOD-ANA-BI , Business Intelligence Functionality, Analytic Models , BC-CST-IC , Internet Communication Manager , Problem