Evaluate Solvers and Thread Number Setting for Numerical Performance

I'm seeking assistance with a runtime error I encountered while running a FEFLOW simulation. The error message is: "RuntimeError: '(0, 0, 'samg') (0, 1, 'samg') (0, 2, 'samg') (0, 3, 'samg') SAMG terminated with error flag = 1 at time-stage 1: 'General error (unclassified)'!" This occurred when I used the example from this link: https://github.com/DHI/ifm/blob/master/examples/set-threads-solver-measure-runtime.ipynb on my model. The SAMG solver was not included in the solver_list of the provided example, but after I added it, I received the error. What should I do?