My Leave Request Fiori App

Hi,

we are implementing My Leave Request App,  application is working in Back-end system(ECC) but we are getting "RFC Error: Exception condition "NOTHING_FOUND" raised in fiori. 

and in screen we can see :

1) absense types dropdown is empty

2) There is no FROM & TO date fields on the screen

3) Used & Available vacations do not get displayed

4) Calender - The calender only allow to select a single date? Why is not multi-select or Range..Is there a config where I can change the selection mode of the calender

PFB the screenshot :

Regards,

Trilochan