Error: package or namespace load failed for ‘rstan’

Summary:

rstan fails to load due to ggplot, unused argument (linewidth = 1)

Description:

The error

Error: package or namespace load failed for ‘rstan’:
 .onLoad failed in loadNamespace() for 'rstan', details:
  call: ggplot2::element_line(linewidth = 1)
  error: unused argument (linewidth = 1)

I can see this was addressed previously here:
https://github.com/stan-dev/rstan/issues/1062
but can't interpret the advice:

The issue is that the r-ver images use a fixed snapshot of the CRAN repos, which in this case are providing ggplot2 3.3.6. The linewidth aesthetic was introduced in 3.4.0, and so the error.

You'll need to use the same command to install ggplot2 that you did for the renv install

https://github.com/stan-dev/rstan/issues/1062#issuecomment-1528972475

Reproducible Steps:

I was following the Getting Started Guide

when I tried to verify installation by running the test model
example(stan_model, package = "rstan", run.dontrun = TRUE)

library(rstan) causes the same error

Current Output:

Error: package or namespace load failed for ‘rstan’:
.onLoad failed in loadNamespace() for 'rstan', details:
call: ggplot2::element_line(linewidth = 1)
error: unused argument (linewidth = 1)
In addition: Warning message:
package ‘rstan’ was built under R version 4.2.3

Expected Output:

RStan Version:

‘2.26.22’

R Version:

"R version 4.2.0 (2022-04-22)"

Operating System:

OS X 12.3.1

Start by reproducing library(rstan) and the example(stan_model, package = "rstan", run.dontrun = TRUE) command from the RStan Getting Started Guide. Read the linked issue 1062 alongside the reported RStan, R, and operating-system versions. Done means the installation verification no longer fails with the ggplot2 linewidth error, or the required compatibility guidance is clarified.