R: Fatal error: creating temporary file for '-e' failed

sessionInfo()

R version 3.5.1 (2018-07-02) Platform: x86_64-apple-darwin15.6.0
(64-bit) Running under: macOS High Sierra 10.13.3

library(parallel)
makeCluster(detectCores() - 1)

Output in R:

Fatal error: creating temporary file for '-e' failed

How can I solve this issue? Thank you!

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Hi Everyone, I have the same problem with markdown not knitting to html, this has happened all of a sudden and I can not put my finger on anything that could have triggered the problem (up until then all my markdowns were knitting correctly). I have bypassed the error by downloading pandoc on the command line using homebrew. I can now produce a html document by typing
library(rmarkdown)
rmarkdown::render("file.Rmd", "html_document")
Please let me know if you know a better solution.