Constraints not accepted by the solver

Nonconvex
1

I have a constant given below

\text{geo_mean}(t)\ge\Phi_{lower}\gamma

\text{geo_mean}(t)\le\Phi_{upper}\gamma

For the first constraint, the solver accepts it, but the second constraint is not accepted by the solver.
It shows an error as:

    Disciplined convex programming error:
    Invalid constraint: {concave} <= {real affine}

How can i resolve this?

2

Your second constraint is not convex.

3

Your second constraint is not convex.

4

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