It looks like this was discussed here: https://github.com/CTeX-org/forum/issues/29
(it's in Chinese, but google translate does a good job on the text.) According to the report, it's a bug in xdvipdfmx, and the blank pdf file is within spec. I looked at epdf.c, but there was no change in the last 2 years. On Wed, Jun 17, 2020 at 10:18 AM Werner LEMBERG <w...@gnu.org> wrote: > > > > xdvipdfmx:fatal: typecheck: Invalid object type: -1 7 (line 2161) > > > > This is on a Fedora system with xdvipdfmx 20190225 and gs 9.52. > > It seems that you probably have to update your TeX system... > > https://tex.stackexchange.com/questions/490616/xdvipdfmx-typecheck-problem > > If this is not a feasible solution please contact the TeX maintainers > of your distribution. > > An alternative is to directly use TeXLive together with its binaries, > which use static linking as much as possible. > > > Werner > -- Han-Wen Nienhuys - hanw...@gmail.com - http://www.xs4all.nl/~hanwen