{real affine} ./ {real affine}

I’m trying to minimize a function that is a function of linear function A./(1-A) where ./ is element by element division and A is a matrix (that is defined as a cvx variable). I’m facing the error {real affine} ./ {real affine} . When I tried to use inv_pos the minimzation problem is infeasible (solution that I get is +Inf ) .
Please help


This is not convex.

Consider the case in which A is a 1 by 1 matrix. Clearly the 2nd derivative of A/(1-A) is negative for some values of A, including some positive values of A.