pandoc version 1.12.3 or higher is required and was not found (R shiny)

Go into RStudio and find the system environment variable for RSTUDIO_PANDOC Sys.getenv(“RSTUDIO_PANDOC”) Then put that in your R script prior to calling the render command. Sys.setenv(RSTUDIO_PANDOC=”— insert directory here —“) This worked for me after I’d been struggling to find how rmarkdown finds pandoc. I had to check github to look at the source.