Problem installing cmdstanr development version

I went here: R Interface to CmdStan • cmdstanr
and followed these instructions:

"To instead install the latest development version of the package from GitHub use

# install.packages("remotes")
remotes::install_github("stan-dev/cmdstanr")

"

It didn’t work! Here’s what happened:

> remotes::install_github("stan-dev/cmdstanr")
Using GitHub PAT from the git credential store.
Error: Failed to install 'cmdstanr' from GitHub:
  cannot open URL 'https://api.github.com/repos/stan-dev/cmdstanr/commits/HEAD'

No big deal because I can just use the regular version (what the help page calls the “latest beta release”). But I guess it’s a problem that the development version isn’t working for me.

I’m doing all of this in RStudio, using R version 4.4.0.

I’m not sure, but perhaps it’s related to this? There has been some changes in repos, apparently:

Here’s what I get:

> remotes::install_github("stan-dev/cmdstanr")
Using GitHub PAT from the git credential store.
Error: Failed to install 'cmdstanr' from GitHub:
  cannot open URL 'https://api.github.com/repos/stan-dev/cmdstanr/commits/HEAD'
> sessionInfo(package="rstanarm")
R version 4.4.0 (2024-04-24)
Platform: aarch64-apple-darwin20
Running under: macOS Sonoma 14.5

Matrix products: default
BLAS:   /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib 
LAPACK: /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/lib/libRlapack.dylib;  LAPACK version 3.12.0

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

time zone: America/New_York
tzcode source: internal

attached base packages:
character(0)

other attached packages:
[1] rstanarm_2.32.1

loaded via a namespace (and not attached):
 [1] compiler_4.4.0  graphics_4.4.0  parallel_4.4.0  tools_4.4.0     utils_4.4.0     grDevices_4.4.0 remotes_2.5.0   stats_4.4.0    
 [9] datasets_4.4.0  methods_4.4.0   base_4.4.0     
>