%Error: t/t_inst_array_bad.v:19:28: Input port connection 'onebit' as part of a module instance array requires 1 or 8 bits, but connection's VARREF 'onebitbad' generates 9 bits. (IEEE 1800-2017 23.3.3)
                                  : ... In instance t
   19 |    sub sub [7:0] (allbits, onebitbad, bitout);
      |                            ^~~~~~~~~
%Error: Exiting due to
