R Session Aborted - RStudio

Hi! I'm working through the tidymodels getting started tutorial (https://www.tidymodels.org/start/models/), and as soon as I added the code for rstanarm use I'm getting "Rstudio session aborted" as soon as I open my RStudio session.

I have no issues executing the code line-by-line from VSCode, and I've recently had similar problems when working with the vitae package (but not other R projects!) - so it's not specific to tidymodels / rstanarm per se.

I'm using RStudio 1.3.959 on MacOS 10.15.7 (19H2), and the crash happens literally 2 seconds after I open the window, so I haven't even had a chance to execute any R code.

What is the recommended procedure for getting a traceback to figure out what's going on in this case?

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