Relative error

Hello

I need your help in Marangoni´s example (Marangoni Convection.pdf), follow the file exactly to the letter but it throws me an error when click on the study toolbar "Compute".

The system indicates:
- No solution was found for initial parameter.
- The maximum number of Newton iterations was reached.
- There was a linear resolver error message.
- The relative error (4e + 002) is greater than the relative tolerance.
- The delivered solution does not converge.
- Feature: Stationary Resolver 1 (sol1/s1)

Thanks in advance.
Kind Regards.