Query output is indeed a problem because, I have 12 cal weeks for each of 5 keyfigures and there are many values in rows. So total number of cells that get generated are 12 x 5 x 1000s . And I didnt understand what you mean by "I mean even after not showing the lower three rows. It is giving you the same error." I did try to hide single value but it is still giving empty cells in output so it is not all hidden in true sense. If you see the error above, it is specifically about Cells - "Result set too large (606762 cells); data retrieval restricted by configuration (maximum = 500000 cells)"
I will check the link you attached. Thanks.