雨果学术网站未格式化（使用blogdown :: serve_site（））

Question

我刚刚更新了R和R软件包，包括blogdown。在此之前，我使用blogdown创建的网站将使用blogdown::serve_site()或blogdown::build_site()从R终端和RStudio正常渲染。

更新R后，我的网站仍使用blogdown::serve_site()或blogdown::build_site()进行渲染，但是它们未格式化（在R和RStudio中会发生这种情况）。例如，this website通常呈现如下：https://www.vitrografista.com/，现在呈现：

这是我的xfun::session_info('blogdown')

R version 4.0.2 (2020-06-22)
Platform: x86_64-apple-darwin17.0 (64-bit)
Running under: macOS Catalina 10.15.6

Locale: en_US.UTF-8 / en_US.UTF-8 / en_US.UTF-8 / C / en_US.UTF-8 / en_US.UTF-8

Package version:
  base64enc_0.1.3 BH_1.72.0.3     blogdown_0.20   bookdown_0.20
  digest_0.6.25   evaluate_0.14   glue_1.4.2      graphics_4.0.2
  grDevices_4.0.2 highr_0.8       htmltools_0.5.0 httpuv_1.5.4
  jsonlite_1.7.1  knitr_1.29      later_1.1.0.1   magrittr_1.5
  markdown_1.1    methods_4.0.2   mime_0.9        promises_1.1.1
  R6_2.4.1        Rcpp_1.0.5      rlang_0.4.7     rmarkdown_2.3
  servr_0.18      stats_4.0.2     stringi_1.5.3   stringr_1.4.0
  tinytex_0.25    tools_4.0.2     utils_4.0.2     xfun_0.16
  yaml_2.2.1

我的blogdown::hugo_version()是“ 0.74.3”

我也跑了blogdown::update_hugo() 但是那一次失败了：

The latest Hugo version is 0.75.1
trying URL 'https://github.com/gohugoio/hugo/releases/download/v0.75.1/hugo_extended_0.75.1_macOS-64bit.tar.gz'
Content type 'application/octet-stream' length 15320266 bytes (14.6 MB)
==================================================
downloaded 14.6 MB

Hugo has been installed to /Users/luna/Library/Application Support/Hugo
Warning message:
In file.copy(exec, destdir, overwrite = TRUE) :
  problem copying ./hugo to /usr/local/bin/hugo: Permission denied

感谢您的宝贵时间。任何帮助将不胜感激！