* using log directory ‘/srv/hornik/tmp/CRAN_pretest/notebookutils.Rcheck’
* using R Under development (unstable) (2025-01-22 r87618)
* using platform: x86_64-pc-linux-gnu
* R was compiled by
    Debian clang version 19.1.6 (1+b1)
    Debian flang-new version 19.1.6 (1+b1)
* running under: Debian GNU/Linux trixie/sid
* using session charset: UTF-8
* checking for file ‘notebookutils/DESCRIPTION’ ... ERROR
Required field missing or empty:
  ‘Author’
* DONE
Status: 1 ERROR