I am trying to analyze partial shading on PV panel. But when I reduced irradiance, I am getting an error

"Unable to reduce the step size without violating minimum step size of 2.2250738585072014E-308 for 1 consecutive times at time 2.2250738585072014E-308. This usually may be caused by violating algebraic constraints in the differential-algebraic system or by the high stiffness of the system. Try tightening the error tolerances, and/or the tolerances for computing consistent conditions. If the problem persists, please check the model 'PVPanel1' or increase the Max consecutive min step size violation parameter in the solver configuration panel".

I tried the suggestions mentioned in the error message, but problem is not resolved.

Can anybody help in this matter?