2912532 - Fiori Launchpad Error : Failure - Unable to load groups

• Fiori Launchpad shows below error after successful logon
  "Failure - Unable to load groups"
  
  
• Network trace shows 500 response for PageSets and PersContainers requests where the response and preview shows below error:
  "In the context of Data Services an unknown internal server error occurred"
  
  
• Console log shows below errors:
  

  Error (500, Internal Server Error) in OData response for POST "/sap/opu/odata/UI2/INTEROP/PersContainers": HTTP request failed
  Details: In the context of Data Services an unknown internal server error occurred - {"requestUri":"/sap/opu/odata/UI2/INTEROP/PersContainers","statusCode":500,"statusText":"Internal Server Error","headers":[],"body":"{\"error\":{\"code\":\"0050569259751EE4BA9710043F8A5115\",\"message\":{\"lang\":\"en\",\"value\":\"In the context of Data Services an unknown internal server error occurred\"},\"innererror\":{\"transactionid\":\"920E7F0D7DE44D37821F99D4F7FD75A4\",\"timestamp\":\"20200407193351.9881050\",\"Error_Resolution\":{\"SAP_Transaction\":\"For backend administrators: run transaction /IWFND/ERROR_LOG on SAP Gateway hub system and search for entries with the timestamp above for more details\",\"SAP_Note\":\"See SAP Note 1797736 for error analysis (https://service.sap.com/sap/support/notes/1797736)\"}}}}"} sap.ui2.srvc.ODataWrapper

• In /n/IWFND/MAINT_SERVICES below Errors are logged
  "Property 'updated' has invalid value '20130808082014.0000000 '
  Parameter has invalid value: Parameter TSTMP has invalid value 0.0000000 ."

• NW AS ABAP 7.52 Service Pack 02
• SAP Fiori Front-end Server 5.0 Service Pack 02
• SAP Fiori For S/4 HANA 1809 SP02 

Unable to load groups, Failure, error 500, Fiori Launchpad, FLP, S/4 HANA 1809, SP02, /n/IWFND/MAINT_SERVICES, Internal Server Error, OData, INTEROP, logon, PageSets, PersContainers , KBA , CA-FLP-ABA , SAP Fiori Launchpad ABAP Services , Problem