Hi Manoj,
Please have a look at the links we (Masy and I) provided.
If the problem still exists, please provide the result of the following t-codes:
Front-end system:
/N/IWFND/ERROR_LOG
Back-end system:
SU53 -- Authorization check log
ST22 -- Dump
Since you are new to Fiori, maybe some basic knowledge can save your time of trouble shooting.
A good entry point is All Things SAP Fiori
Pay attention of the sections: Installation & Configuration.
Regards,
Moon