\documentclass[uplatex]{jsbook}
\begin{document}
初めてのTex
\end{document}
This is ptex2pdf[.lua] version 20181212.0.
Processing hajimete-tex3.tex
This is e-upTeX, Version 3.14159265-p3.8.1-u1.23-180226-2.6 (utf8.uptex) (TeX Live 2018) (preloaded format=uplatex)
restricted \write18 enabled.
entering extended mode
(./hajimete-tex3.tex
pLaTeX2e <2018-12-01u02> (based on LaTeX2e <2018-12-01>)
(/usr/local/texlive/2018/texmf-dist/tex/platex/jsclasses/jsbook.cls
Document Class: jsbook 2018/12/11 jsclasses (okumura, texjporg)
(/usr/local/texlive/2018/texmf-dist/tex/platex/jsclasses/jslogo.sty))
(./hajimete-tex3.aux) [1] (./hajimete-tex3.aux) )
Output written on hajimete-tex3.dvi (1 page, 352 bytes).
SyncTeX written on hajimete-tex3.synctex.gz.
Transcript written on hajimete-tex3.log.
hajimete-tex3.dvi -> hajimete-tex3.pdf
[1
kpathsea: Running mktexpk --mfmode / --bdpi 600 --mag 0+555/600 --dpi 555 uprml-h
mktexpk: don't know how to create bitmap font for uprml-h.
mktexpk: perhaps uprml-h is missing from the map file.
kpathsea: Appending font creation commands to missfont.log.
dvipdfmx:warning: Could not locate a virtual/physical font for TFM "uprml-h".
dvipdfmx:warning: >> There are no valid font mapping entry for this font.
dvipdfmx:warning: >> Font file name "uprml-h" was assumed but failed to locate that font.
dvipdfmx:fatal: Cannot proceed without .vf or "physical" font for PDF output...
Output file removed.
ptex2pdf processing of hajimete-tex3.tex failed.