It seems like "des_time_march.f " was missed in the tutorial “tutorials\dem\screwfeeder_3d” in mfix-19.3.0 since it is mentioned in screwfeeder.pdf but not shown in the folder.
BTW, thanks for all the updates, it is really useful and helpful for my current work.
Sorry about that, the file will be included in the next point release. In the meantime, you can copy it from tutorials/dem/rotating_drum_3d. The missing file only has a minor effect on the solution.