It is only happens for empty variables. For example on this video x4 and x5 are both have zeroes in constant table. Since formula divides by constant at the end, you get an error (dividing by 0 is forbidden). You want to check your formula if you use constant as denominator and if you correctly set constants.
Thanks
it always give me #div/0 error after first iteration, what could be wrong?
It is only happens for empty variables. For example on this video x4 and x5 are both have zeroes in constant table. Since formula divides by constant at the end, you get an error (dividing by 0 is forbidden). You want to check your formula if you use constant as denominator and if you correctly set constants.