Error(s) in re-building vignettes:
--- re-building 'tbm_supplement.Rnw' using knitr

warning: solve(): system is singular; rcond: 4.38083e-20; attempting approx solution

warning: solve(): system is singular; rcond: 4.38083e-20; attempting approx solution

warning: solve(): system is singular; rcond: 4.38083e-20; attempting approx solution

warning: solve(): system is singular; rcond: 4.38083e-20; attempting approx solution

warning: solve(): system is singular; rcond: 4.38083e-20; attempting approx solution

warning: solve(): system is singular; rcond: 4.38083e-20; attempting approx solution

warning: solve(): system is singular; rcond: 4.38083e-20; attempting approx solution

warning: solve(): system is singular; rcond: 4.38083e-20; attempting approx solution

warning: solve(): system is singular; rcond: 4.38083e-20; attempting approx solution

warning: solve(): system is singular; rcond: 4.38083e-20; attempting approx solution

warning: solve(): system is singular; attempting approx solution

warning: solve(): system is singular; attempting approx solution

warning: solve(): system is singular; attempting approx solution

warning: solve(): system is singular; attempting approx solution

warning: solve(): system is singular; attempting approx solution

warning: solve(): system is singular; rcond: 9.83748e-19; attempting approx solution

warning: solve(): system is singular; rcond: 9.83748e-19; attempting approx solution

warning: solve(): system is singular; rcond: 9.83748e-19; attempting approx solution

warning: solve(): system is singular; rcond: 9.83748e-19; attempting approx solution

warning: solve(): system is singular; rcond: 9.83748e-19; attempting approx solution
Warning in system(paste(shQuote(texi2dvi), if (quiet) "--quiet" else "",  :
  running command '"C:\PROGRA~1\MiKTeX\miktex\bin\x64\texify.exe" --quiet --pdf "tbm_supplement.tex" ' had status 1
Error: processing vignette 'tbm_supplement.Rnw' failed with diagnostics:
running 'texi2dvi' on 'tbm_supplement.tex' failed

LaTeX errors:
.tex:37: LaTeX Error: Missing \begin{document}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              

--- failed re-building 'tbm_supplement.Rnw'

SUMMARY: processing the following file failed:
  'tbm_supplement.Rnw'

Error: Vignette re-building failed.
Execution halted