%Error: t/t_stream_bad.v:12:32: Expecting expression to be constant, but can't convert a RAND to constant. : ... note: In instance 't' 12 | initial packed_data_32 = {<<$random{byte_in}}; | ^~~~~~~ %Error: t/t_stream_bad.v:12:30: Slice size isn't a constant or basic data type. : ... note: In instance 't' 12 | initial packed_data_32 = {<<$random{byte_in}}; | ^~ %Error-UNSUPPORTED: t/t_stream_bad.v:12:30: Unsupported: Stream operation on a variable of a type 'byte$[0:3]' : ... note: In instance 't' 12 | initial packed_data_32 = {<<$random{byte_in}}; | ^~ ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest %Error: Exiting due to