From the Tumbleweed official package of RStudio, the following profiler test
was run:

---

df = data.frame(v = 1:4, name = letters[1:4])
profvis(expr = {

sub.test1 <- system.time(
  for (i in 1:50000) {
    df[3, 2]
  }
)

sub.test2 <- system.time(
  for (i in 1:50000) {
    df[3, "name"]
  }
)

sub.test3 <- system.time(
  for (i in 1:50000) {
    df$name[3]
  }
)
}
)

---

This resulted in the output:

---

sh: /usr/lib/rstudio/bin/pandoc/pandoc: Not a directory
Warning message:
In system(paste(shQuote(pandoc_path), "--version"), intern = TRUE) :
  running command ''/usr/lib/rstudio/bin/pandoc/pandoc' --version' had status
126

---

In the RStudio directory, the pandoc executable could be seen, but not in the
folder structure specified by RStudio.

Since I had pandoc installed in /usr/bin/pandoc, I postulated renaming Pandoc
in the RStudio directory would force the RStudio profiler to use the
system-installed Pandoc instead. The command:

sudo mv /usr/lib/rstudio/bin/pandoc /usr/lib/rstudio/bin/pandoc-exec

I was then able to run the profiler in RStudio.