Knitr fails on RStudioCloud

[ursus]

I am trying to Knitr this project here: https://rstudio.cloud/project/359972

And it does not work, perhaps because of the rstan library.

---

UPDATE

I get the following error:

Error in compileCode(f, code, language = language, verbose = verbose) : 
  Compilation ERROR, function(s)/method(s) not created! In file included from /home/rstudio-user/R/x86_64-pc-linux-gnu-library/3.6/BH/include/boost/smart_ptr/shared_ptr.hpp:28:0,
                 from /home/rstudio-user/R/x86_64-pc-linux-gnu-library/3.6/BH/include/boost/shared_ptr.hpp:17,
                 from /home/rstudio-user/R/x86_64-pc-linux-gnu-library/3.6/StanHeaders/include/stan/math/prim/mat/fun/LDLT_factor.hpp:7,
                 from /home/rstudio-user/R/x86_64-pc-linux-gnu-library/3.6/StanHeaders/include/stan/math/prim/mat/err/check_ldlt_factor.hpp:6,
                 from /home/rstudio-user/R/x86_64-pc-linux-gnu-library/3.6/StanHeaders/include/stan/math/prim/mat.hpp:33,
                 from /home/rstudio-user/R/x86_64-pc-linux-gnu-library/3.6/StanHeaders/include/stan/math/rev/mat.hpp:12,
                 from /home/rstudio-user/R/x86_64-pc-linux-gnu-library/3.6/StanHeaders/include/stan/math.hpp:4,
                 from /home/rstudio-user/R/x86_64-pc-linux-gnu-libr
Error in sink(type = "output") : invalid connection

[andy_kipp]

What sort of error do you see when you attempt to knit?

[ursus]

@andy_kipp I have updated the question.