Pandoc-related Rmarkdown error when knitting:

Hi, and welcome!

Please see the FAQ: What's a reproducible example (`reprex`) and how do I create one? Using a reprex, complete with representative data will attract quicker and more answers. Just for future reference: this type of error message really not needed.

The key to the error message is

pandoc.exe: openBinaryFile: does not exist (No such file or directory)

which, means that either pandoc is not installed at all, or it isn't findable.