%Error: t/t_array_method_bad.v:11:9: Unknown built-in array method 'mex'
                                   : ... note: In instance 't'
   11 |       q.mex;
      |         ^~~
        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
%Error: Exiting due to