Question about convergence

Dear all,

I am trying to do a stress-controlled triaxial test following one of the benchmark examples, but instead of using CamClay model, I am trying to use Ehlers model. However, I am getting the following error:

I was reading some comments here with the same problem and I’ve tried decreasing the step size and also decreasing the value of the tolerance. Is there something else that could be wrong in my input file?

I attached the input file in this link:

Thanks for your help :smiley: