Hi Gopi,
we had exactly the same error.
Our problem was, that we entered the absolute path to the Fiori/UI application in the launchpad configuration as URL, which is of course nonsense. Because we entered it with protocol HTTP and then we started the Fiori Launchpad with HTTPS the error occurred.
Solution as also described in the links Masa posted, is to enter just the relative path to the Fiori application (in your case /sap/bc/ui5_ui5/sap/zgn_splitapp1).
Maybe you did the same mistake as we have done.
Regards, Florian