在 Texlive 文件再打开编译时遇到 'ctex.sty' not found

如题，今天第一次使用 Texlive 选择了完整安装。
谁知所有的文件在第一次新建打开编译的时候没问题，关闭再打开编译的时候就会报错如下：

This is pdfTeX, Version 3.14159265-2.6-1.40.21 (TeX Live 2020/W32TeX) (preloaded format=pdflatex) restricted \write18 enabled. entering extended mode (./ps2_sol.tex LaTeX2e <2020-10-01> patch level 2 L3 programming layer <2020-10-27> xparse <2020-03-03> (c:/Users/19122/AppData/Roaming/TinyTeX/texmf-dist/tex/latex/base/article.cls Document Class: article 2020/04/10 v1.4m Standard LaTeX document class (c:/Users/19122/AppData/Roaming/TinyTeX/texmf-dist/tex/latex/base/size10.clo)) ! LaTeX Error: File `ctex.sty' not found. Type X to quit or <RETURN> to proceed, or enter new name. (Default extension: sty) Enter file name: Process interrupted by user 

文档如下

\documentclass{article} \usepackage[space]{ctex} \begin{document} \section{Insurance} \paragraph{1.} Expected income is $$\bar{Y} = pY_H + (1-p)Y_L = 7$$ Expected Utility is $$u(\bar{Y}) = 7^{0.5}$$ Expected utility: $$Y_0 = pu(Y_H)+(1-p)u(Y_L) = 2.5 \leq u(\bar{Y}) = 7^{0.5} = u(\bar{Y} - q)$$ $$\bar{M} = q = 0.75$$ 你好，こんにちは、LaTeX \end{document} 

Package Manager 中也能搜索到确认有 ctex 这个包，不知道有没有朋友也遇到这样的问题，求解。