Error in yaml::yaml.load(..., eval.expr = TRUE)

[MatixR]

Hi,
When I try to use the paper_zh on Mac OS , I meet a problem with YAML.

I use the flowing code to generate the template.
bookdownplus(template = 'paper_zh', to = "chinese_paper", render = FALSE) ,

When I try to produce a pdf document, I find the following erorr:

n*** Successfully loaded .Rprofile ***n Error in yaml::yaml.load(..., eval.expr = TRUE) : Parser error: while parsing a block mapping at line 12, column 3 did not find expected key at line 20, column 4 Calls: <Anonymous> ... parse_yaml_front_matter -> yaml_load -> <Anonymous> Execution halted

By the way, I have changed the YAML setup in the index.md .

output:
bookdown::pdf_book:
# includes:
# before_body: abstract.tex
keep_tex: yes
dev: "cairo_pdf"
citation_package: natbib
latex_engine: xelatex # for chinese
#template: tex/template_paper_zh.tex
template: tex/template_paper_zh_mac.tex # for macOS #------ I use the tex template for macOS
pandoc_args: --top-level-division=chapter
toc_depth: 3
toc_unnumbered: no
toc_appendix: yes
quote_footer: ["\begin{flushright}", "\end{flushright}"]
documentclass: article
bibliography: [bib/bib.bib]
biblio-style: apalike
link-citations: yes
colorlinks: no
#toc: no
lot: no
lof: no
geometry: [a4paper]
site: bookdown::bookdown_site

description: "chemistry"

github-repo: dapengde/bookdown-chemistry

#cover-image: images/cover.jpg

[pzhaonet]

I am sorry that I don't have a mac and this issue cannot be tested.