Maintainer: ‘Kyun-Seop Bae <k@acr.kr>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: c(person(given = "Kyun-Seop",
                      family = "Bae",
                      role = c("aut", "cre"),
                      email = "k@acr.kr"),
               person(given = c("Jee", "Eun"),
                      family = "Lee",
                      role = "aut"))
as necessary.

Found the following (possibly) invalid file URIs:
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf
  URI: file268da152ca2ef.html
    From: inst/doc/pkr-manual.pdf