みなさん、ありがとうございます。
和田さんの提案された方法を試してみましたが、新たなエラーがでてきました。
everyshi.styを要求されたので、ネット上で手に入れようとしましたが見つかりません。。。
どうしたらよいでしょうか・・・
This is ptex2pdf[.lua] version 20200520.0.
Processing 2021.0206(Beamer).tex
This is e-upTeX, Version 3.14159265-p3.8.3-u1.27-191112-2.6 (utf8.uptex) (TeX Live 2020/W32TeX) (preloaded format=uplatex)
restricted \write18 enabled.
entering extended mode
(./2021.0206(Beamer).tex
pLaTeX2e <2020-10-01u04>+1 (based on LaTeX2e <2020-10-01> patch level 4)
L3 programming layer <2021-01-09> xparse <2020-03-03>
(c:/w32tex/share/texmf-dist/tex/platex/base/platexrelease.sty
(c:/w32tex/share/texmf-dist/tex/latex/base/latexrelease.sty
(c:/w32tex/share/texmf-dist/tex/latex/l3kernel/expl3.ltx)
(c:/w32tex/share/texmf-dist/tex/latex/base/utf8.def
(c:/w32tex/share/texmf-dist/tex/latex/base/omsenc.dfu)
(c:/w32tex/share/texmf-dist/tex/latex/base/ot1enc.dfu)
(c:/w32tex/share/texmf-dist/tex/latex/base/t1enc.dfu)
(c:/w32tex/share/texmf-dist/tex/latex/base/ts1enc.dfu))))
(c:/w32tex/share/texmf-dist/tex/latex/beamer/beamer.cls
Document Class: beamer 2020/11/26 v3.60 A class for typesetting presentations
(c:/w32tex/share/texmf-dist/tex/latex/beamer/beamerbasemodes.sty
(c:/w32tex/share/texmf-dist/tex/latex/etoolbox/etoolbox.sty)
(c:/w32tex/share/texmf-dist/tex/latex/beamer/beamerbasedecode.sty))
(c:/w32tex/share/texmf-dist/tex/generic/iftex/ifpdf.sty
(c:/w32tex/share/texmf-dist/tex/generic/iftex/iftex.sty))
(c:/w32tex/share/texmf-dist/tex/latex/beamer/beamerbaseoptions.sty
(c:/w32tex/share/texmf-dist/tex/latex/graphics/keyval.sty))
(c:/w32tex/share/texmf-dist/tex/latex/geometry/geometry.sty
(c:/w32tex/share/texmf-dist/tex/generic/iftex/ifvtex.sty)
(c:/w32tex/share/texmf-dist/tex/latex/geometry/geometry.cfg))
(c:/w32tex/share/texmf-dist/tex/latex/base/size11.clo)
(c:/w32tex/share/texmf-dist/tex/latex/pgf/basiclayer/pgfcore.sty
(c:/w32tex/share/texmf-dist/tex/latex/graphics/graphicx.sty
(c:/w32tex/share/texmf-dist/tex/latex/graphics/graphics.sty
(c:/w32tex/share/texmf-dist/tex/latex/graphics/trig.sty)
(c:/w32tex/share/texmf-dist/tex/latex/graphics-cfg/graphics.cfg)
(c:/w32tex/share/texmf-dist/tex/latex/graphics-def/dvipdfmx.def)))
(c:/w32tex/share/texmf-dist/tex/latex/pgf/systemlayer/pgfsys.sty
(c:/w32tex/share/texmf-dist/tex/latex/pgf/utilities/pgfrcs.sty
(c:/w32tex/share/texmf-dist/tex/generic/pgf/utilities/pgfutil-common.tex
(c:/w32tex/share/texmf-dist/tex/generic/pgf/utilities/pgfutil-common-lists.tex)
) (c:/w32tex/share/texmf-dist/tex/generic/pgf/utilities/pgfutil-latex.def
! LaTeX Error: File `everyshi.sty' not found.
Type X to quit or <RETURN> to proceed,
or enter new name. (Default extension: sty)
Enter file name: