Error(s) in re-building vignettes:
  ...
--- re-building ‘otsad.Rnw’ using knitr
Error: processing vignette 'otsad.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'otsad.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.239 \hlkwd{install.packages}\hldef
                                    {(}\hlsng{"devtools"}\hldef{)}
? 
! Emergency stop.
! Emergency stop.
l.239 
      
End of file on the terminal!

!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘otsad.Rnw’

SUMMARY: processing the following file failed:
  ‘otsad.Rnw’

Error: Vignette re-building failed.
Execution halted

Installation failed.
See ‘/Volumes/Builds/packages/big-sur-arm64/results/4.4/fCWTr.Rcheck/00install.out’ for details.
Installation failed.
See ‘/Volumes/Builds/packages/big-sur-x86_64/results/4.4/fCWTr.Rcheck/00install.out’ for details.
Installation failed.
See ‘/Volumes/Builds/packages/big-sur-arm64/results/4.3/fCWTr.Rcheck/00install.out’ for details.
Installation failed.
See ‘/Volumes/Builds/packages/big-sur-x86_64/results/4.3/fCWTr.Rcheck/00install.out’ for details.

installed size is 26.0Mb
  sub-directories of 1Mb or more:
    libs  25.7Mb
installed size is 26.4Mb
  sub-directories of 1Mb or more:
    libs  26.1Mb

File ‘scellpam/libs/scellpam.so’:
  Found non-API call to R: ‘SET_TYPEOF’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
See section ‘Moving into C API compliance’ in the ‘Writing R
Extensions’ manual for issues with use of non-API entry points.
File ‘scellpam/libs/scellpam.so’:
  Found non-API call to R: ‘SET_TYPEOF’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
See section ‘Moving into C API compliance’ in the ‘Writing R
Extensions’ manual for issues with use of non-API entry points.
File ‘scellpam/libs/scellpam.so’:
  Found non-API call to R: ‘SET_TYPEOF’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual,
and section ‘Moving into C API compliance’ for issues with the use of
non-API entry points.
File ‘scellpam/libs/scellpam.so’:
  Found non-API call to R: ‘SET_TYPEOF’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual,
and section ‘Moving into C API compliance’ for issues with the use of
non-API entry points.
File 'scellpam/libs/x64/scellpam.dll':
  Found non-API call to R: 'SET_TYPEOF'

Compiled code should not call non-API entry points in R.

See 'Writing portable packages' in the 'Writing R Extensions' manual.
See section 'Moving into C API compliance' in the 'Writing R
Extensions' manual for issues with use of non-API entry points.
installed size is 17.3Mb
  sub-directories of 1Mb or more:
    libs  16.7Mb
installed size is 18.0Mb
  sub-directories of 1Mb or more:
    libs  17.4Mb
installed size is 17.3Mb
  sub-directories of 1Mb or more:
    libs  16.7Mb
installed size is 18.0Mb
  sub-directories of 1Mb or more:
    libs  17.4Mb