Hello Sreejith,
Please perform the following steps:
A) Make a copy of the same report
B) Save the report again with different name
C) recreate the report definition in Clarity
D) run the report
E) Also can you check if the report and the other reports that work are going against the same universe ?
F) Also if you are using IE 11, just for the test use earlier version of IE or test with Chrome.
Please update the findings, or you can create the ticket in our support and we can perform the WebEx
Many Thanks !!
Mustafa Wazirali