当我打开我的R Studio Blogdown项目并serve_site()时，它会在查看器中预览，并且看起来不错，只是内容没有像.Rmd文件中那样被更新。似乎预览站点卡在了旧的.html文件上。
在执行serve_site()后在R Studio中保存编辑后的Blogdown帖子时，我希望实时预览会更新。
但是，现在，如果我对帖子进行少量编辑并单击“保存”，则预览将失败，并且出现以下我无法理解或修复的错误：
Error in generator$render(input_file = input_file, output_format = output_format, :
You probably should not knit the document in a blogdown project. Just call blogdown::serve_site() once per R session. See https://bookdown.org/yihui/blogdown/workflow.html. If you are sure you want to knit it and know what it means, set options(blogdown.allow_knit = TRUE).
Calls: <Anonymous> -> <Anonymous>
Execution halted
sessionInfo()
R version 3.4.3 (2017-11-30)
Platform: x86_64-apple-darwin15.6.0 (64-bit)
Running under: macOS 10.14.2
Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/3.4/Resources/lib/libRlapack.dylib
locale:
[1] en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] shiny_1.2.0
loaded via a namespace (and not attached):
[1] Rcpp_1.0.0 compiler_3.4.3 later_0.8.0 prettyunits_1.0.2 remotes_2.0.2
[6] tools_3.4.3 testthat_2.0.1 digest_0.6.18 pkgbuild_1.0.2 pkgload_1.0.2
[11] jsonlite_1.6 evaluate_0.13 memoise_1.1.0 rlang_0.3.1 rstudioapi_0.9.0
[16] cli_1.0.1 curl_3.3 yaml_2.2.0 blogdown_0.10.5 xfun_0.4
[21] stringr_1.4.0 withr_2.1.2 knitr_1.21 desc_1.2.0 fs_1.2.6
[26] devtools_2.0.1 rprojroot_1.3-2 glue_1.3.0 R6_2.4.0 processx_3.2.1
[31] rmarkdown_1.11 bookdown_0.9 sessioninfo_1.1.1 servr_0.12 callr_3.1.1
[36] magrittr_1.5 backports_1.1.2 ps_1.3.0 promises_1.0.1 htmltools_0.3.6
[41] usethis_1.4.0 rsconnect_0.8.13 assertthat_0.2.0 xtable_1.8-3 mime_0.6
[46] httpuv_1.4.5.1 stringi_1.3.1 miniUI_0.1.1.1 crayon_1.3.4