Hi Tejas,
if you cannot find quick fix, you may find the related file in your pc, such as,
C:\Users\<username>\hana_work\<repository>\__empty__\EmpApp\.settings
->org.eclipse.jdt.core.prefs
Open it with notepad and save it as UTF-8 file and replace the original one, then activate again,
it should work.
Regards,
Shidong