问使用Xelatex编译器的latex运行时错误

EN

\documentclass{article}

\usepackage{xeCJK}

\begin{document}
    
    hello,你好
    
\end{document}

expl3.sty error: line 148

File ended while scanning use of \__sys_tmp:w. { \sys_load_backend:n { } }

Missing number, treated as zero. { \sys_load_backend:n { } }

Missing = inserted for \ifnum. { \sys_load_backend:n { } }

Missing number, treated as zero. { \sys_load_backend:n { } }

xeCJK.sty error:

TeX capacity exceeded, sorry [save size=80000]. \xeCJKResetCharClass

{ \sys_load_backend:n { } }

(/usr/local/texlive/2020/texmf-dist/tex/xelatex/xecjk/xeCJK.sty
(/usr/local/texlive/2020/texmf-dist/tex/latex/l3kernel/expl3.sty
Package: expl3 2021-01-09 L3 programming layer (loader) 

(/usr/local/texlive/2020/texmf-dist/tex/latex/l3backend/l3backend-xetex.def
File: l3backend-xetex.def 2020-01-29 L3 backend support: XeTeX

(|extractbb --version))
Runaway argument?
\q_stop <\__int_eval:w \c_zero_int \__int_eval_end: \exp_after:wN \use_ii:nnn \
ETC.
! File ended while scanning use of \__sys_tmp:w.
<inserted text> 
                \par 
l.148   { \sys_load_backend:n { } }
                                   
I suspect you have forgotten a `}', causing me
to read past where you wanted me to stop.
I'll try to recover; but if the error is serious,
you'd better type `E' or `X' now and fix your file.

! Missing number, treated as zero.
<to be read again> 
                   \__kernel_tl_set:Nx 
l.148   { \sys_load_backend:n { } }
                                   
A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

! Missing = inserted for \ifnum.
<to be read again> 
                   \__kernel_tl_set:Nx 
l.148   { \sys_load_backend:n { } }
                                   
I was expecting to see `<', `=', or `>'. Didn't.

! Missing number, treated as zero.
<to be read again> 
                   \__kernel_tl_set:Nx 
l.148   { \sys_load_backend:n { } }
                                   
A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

)
Package: xeCJK 2020/10/19 v3.8.6 Typesetting CJK scripts with XeLaTeX

(/usr/local/texlive/2020/texmf-dist/tex/latex/l3packages/l3keys2e/l3keys2e.sty
Package: l3keys2e 2020-10-27 LaTeX2e option processing using LaTeX3 keys
)
(/usr/local/texlive/2020/texmf-dist/tex/latex/l3packages/xtemplate/xtemplate.st
y
Package: xtemplate 2020-10-27 L3 Experimental prototype document functions
\l__xtemplate_tmp_dim=\dimen139
\l__xtemplate_tmp_int=\count181
\l__xtemplate_tmp_muskip=\muskip16
\l__xtemplate_tmp_skip=\skip49
) (/usr/local/texlive/2020/texmf-dist/tex/latex/l3packages/xparse/xparse.sty
Package: xparse 2020-10-27 L3 Experimental document command parser

(/usr/local/texlive/2020/texmf-dist/tex/latex/l3packages/xparse/xparse-generic.
tex))
\l__xeCJK_tmp_int=\count182
\l__xeCJK_tmp_box=\box47
\l__xeCJK_tmp_dim=\dimen140
\l__xeCJK_tmp_skip=\skip50
 (/usr/local/texlive/2020/texmf-dist/tex/latex/ctex/ctexhook.sty
Package: ctexhook 2020/10/19 v2.5.5 Document and package hooks (CTEX)
)
\g__xeCJK_space_factor_int=\count183
\l__xeCJK_begin_int=\count184
\l__xeCJK_end_int=\count185
\c__xeCJK_CJK_class_int=\XeTeXcharclass1
\c__xeCJK_FullLeft_class_int=\XeTeXcharclass2
\c__xeCJK_FullRight_class_int=\XeTeXcharclass3
\c__xeCJK_HalfLeft_class_int=\XeTeXcharclass4
\c__xeCJK_HalfRight_class_int=\XeTeXcharclass5
\c__xeCJK_NormalSpace_class_int=\XeTeXcharclass6
\c__xeCJK_CM_class_int=\XeTeXcharclass7
\c__xeCJK_HangulJamo_class_int=\XeTeXcharclass8

! TeX capacity exceeded, sorry [save size=80000].
<argument> ..._xeCJK_begin_int =\l__xeCJK_tmp_int 
                                                  \int_incr:N \l__xeCJK_begi...
l.656 \xeCJKResetCharClass
                          
If you really absolutely need more capacity,
you can ask a wizard to enlarge me.

 
Here is how much of TeX's memory you used:
 973 strings out of 477220
 23745 string characters out of 5830450
 300467 words of memory out of 5000000
 20745 multiletter control sequences out of 15000+600000
 403438 words of font info for 28 fonts, out of 8000000 for 9000
 1348 hyphenation exceptions out of 8191
 67i,0n,75p,234b,80001s stack positions out of 5000i,500n,10000p,200000b,80000s
No pages of output.