When I use RStudio to Generate PDF File，I Met this Error ：! Missing number, treated as zero - r-markdown

Question

When I use RStudio to Generate PDF File，I Met this Error ：
Missing number, treated as zero.
<to be read again>
(
l.349 \begin
{minipage}[b]{\linewidth}\raggedright
错误: LaTeX failed to compile bookdown.tex. See https://yihui.org/tinytex/r/#debugging for debugging tips. See bookdown.log for more info.
停止执行
When I open the tex file：
\begin{minipage}[b]{\linewidth}\raggedright
独立性和可持续性
\end{minipage}
the Rmd file is
---
CJKmainfont: PingFangSC-Regular
fontsize: "12pt"
indent: true
header-includes:
- \usepackage{xeCJK}
output:
pdf_document:
keep_tex: yes
latex_engine: xelatex
toc: yes
toc_depth: 1
template: latex/template.tex
documentclass: ctexbook
link-citations: yes
geometry: [b5paper, tmargin=2.5cm, bmargin=2.5cm, lmargin=3.5cm, rmargin=2.5cm]
colorlinks: yes
---
latex/template.tex：
https://github.com/yihui/bookdown-chinese/blob/master/latex/template.tex
How can I fix it？ if I comment the code (#template:latex/template.tex) the Errors would be gone

Answer 1

You will successfully render the following Rmd to a pdf without any error.
Although #Stéphane Laurent commented here that you may need to add a diameter to \linewidth, I do not think that is cause of the problem you faced, since the Rmd below using \linewidth, not 1\linewidth, works fine.
The real problem may lay in other parts of your Rmd file, I suspect. However, you must post a reproducible example like the one I show in this answer, as I commented here, and present the contents of the .log file that is created when you knit your Rmd file.
---
header-includes:
- \usepackage{ctex}
output:
pdf_document: default
---
\begin{minipage}[b]{\linewidth}\raggedright
独立性和可持续性
\end{minipage}