For example, to assess the data fitting by AFORS-HEt, I simulated a solar cell and I got IV curve for that. the measurement voltage points I used are the same I imported for fitting result, I set the simulator to vary the thickness of base to fit the resul. however, once the software start to measure IV curve, once the IV curve is measured I get the error which is in the picture bellow. has anyone had a same problem as me? any suggestions/solutions?