我正在研究一个 R 包。它在我的 GitHub 上，但是在摆弄 pkgdown 以获得一个漂亮的网站之后，该包不再有效。具体来说，即使在加载包之后，其中的功能也不再可访问：
> remotes::install_github("joeystanley/barktools")
> library(barktools)
该软件包似乎加载正常。
> ?bark
bark 函数的帮助加载正常。
> bark(100)
# Error in bark(100) : could not find function "bark"
谁能帮我弄清楚发生了什么以及我哪里出错了？
> sessionInfo()
R version 4.0.2 (2020-06-22)
Platform: x86_64-apple-darwin17.0 (64-bit)
Running under: macOS Catalina 10.15.5
Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/4.0/Resources/lib/libRlapack.dylib
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] barktools_0.2.0
loaded via a namespace (and not attached):
[1] prettyunits_1.1.1 ps_1.3.3 fansi_0.4.1 withr_2.2.0 rprojroot_1.3-2 packrat_0.5.0 crayon_1.3.4
[8] assertthat_0.2.1 R6_2.4.1 backports_1.1.8 cli_2.0.2 curl_4.3 remotes_2.1.1 rstudioapi_0.11
[15] callr_3.4.3 tools_4.0.2 glue_1.4.1 xfun_0.15 compiler_4.0.2 processx_3.4.3 pkgbuild_1.1.0
[22] knitr_1.29