Replace #NUM! result with a blank

Question

I want to replace a #NUM! result with a blank

if {=SUM(LARGE(C2:I2,{1;2;3;4}))} returns a #NUM! (because 4 or more cells are blank) how do I replace the #NUM! with a BLANK?

the reason for this is because i would like to RANK the cells that contain a numeric value

eg: in the cell K2: =RANK(J2,$J2:J52,0)