This error indicates the automeshing is not well resolving the geometry/doping/high-E-fields so the equation is not solved correctly. Think this way, using a Newton method to solve an question numerically, the error is oscillating and has not reached a desired tolerance.
The message in yellow shows that "after 0 interation", meaning the solver may not start the interation. So pleae check your device configuration and make sure partition works fine before simulation. If there is a curved surface on a flate surface, you may consider to have a few nano meter overlap to avoid perfect geometry; you may also reduce the element quanlity, modify some tolerances, and use more number of iteration than the default one, if it is truely the divergence issue.