3114085 - Fiori Launchpad empty or blank after migrating from ECC 6.0 to S/4HANA 2020

• Integrators/User upgraded ECC to S/4HANA 2020
• However the Fiori Launchpad does not respond or give any indication of success after loading it. 
  It only shows the Fiori Launchpad header and user avatar without any tiles.
  
  
• Browser Developer Tools shows 404 errors:
  
  ~~~Network Chrome Trace~~~~
  https://<domain>:<port>/sap/bc/ui2/%7B%7Binclude
  
  Header:
  
  Request URL: https://<domain>.local:<port>/sap/bc/ui2/%7B%7Binclude
  
  path: /sap/bc/ui2/start_up
  
  and not other error as most of the GET Methods are 200 status
  ~~~~End Network Trace~~~~~~
  
  ~~~~Console Trace~~~~~~~~~
  Malformed start tag. A self closing slash should be followed by a U+003E GREATER-THAN SIGN (>).
  ~~~End Console Trace~~~~~~~
  
  
• Other errors:
  
  ~~~~Start here~~~
  GET
  
  https://<domain>/sap/bc/ui5_ui5/ui2/ushell/shells/abap/%7B%7Binclude net::ERR_ABORTED 404
  
  %7B%7Binclude {{include
  
  ~~~End here~~~~
  
• Note: Fiori UI is incompletely displayed with No User Profile Display Enabled
• A 500 internal server error may be returned on the start_up request

• S/4HANA 2020
• SAPUI5 1.84 and others 

"Fiori Launchpad Blank","Fiori Launchpad Empty","/sap/bc/ui2/%7B%7Binclude","Malformed start tag. A self closing slash should be followed by a U+003E GREATER-THAN SIGN (>).","sap.ushellConfig.serverSideConfig.1","KEYUSER_APP_VAR_CREATE" 500 internal server error, %7B%7Binclude, {{include, 7Binclude, , KBA , CA-UI5-ABA-SAR , UI5 App Infrastructure: SAPUI5 ABAP Repository , CA-FLP-ABA , SAP Fiori Launchpad ABAP Services , CA-FE-CFG , SAP Fiori UI - Configuration & Rapid Activation Tasklists , Problem