Trouble installing rstan on macOS Catalina, R version 4.0.3

Hang on. Now I’m getting new errors in RStudio as well:

sh: -c: line 0: unexpected EOF while looking for matching `‘’
sh: -c: line 1: syntax error: unexpected end of file

And it seems I’m not the only running into this: Weird error in R studio console whenever I open up a stan file

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