Error(s) in re-building vignettes:
  ...
--- re-building ‘using_the_vennLasso_package.Rmd’ using rmarkdown
tlmgr search --file --global '/tikzlibrarytopaths.code.tex'
TLPDB: not a directory, not loading: /home/hornik/lib/texmf/
tlmgr: running in usermode, did you call `tlmgr init-usertree'?
Warning in system2("tlmgr", args, ...) :
  running command ‘'tlmgr' search --file --global '/tikzlibrarytopaths.code.tex'’ had status 2
Warning in parse_packages(logfile, quiet = c(TRUE, FALSE, FALSE)) :
  Failed to find a package that contains tikzlibrarytopaths.code.tex
tlmgr search --file --global '/tikzlibraryshapes.code.tex'
TLPDB: not a directory, not loading: /home/hornik/lib/texmf/
tlmgr: running in usermode, did you call `tlmgr init-usertree'?
Warning in system2("tlmgr", args, ...) :
  running command ‘'tlmgr' search --file --global '/tikzlibraryshapes.code.tex'’ had status 2
Warning in parse_packages(logfile, quiet = c(TRUE, FALSE, FALSE)) :
  Failed to find a package that contains tikzlibraryshapes.code.tex
tlmgr search --file --global '/tikzlibrarybackgrounds.code.tex'
TLPDB: not a directory, not loading: /home/hornik/lib/texmf/
tlmgr: running in usermode, did you call `tlmgr init-usertree'?
Warning in system2("tlmgr", args, ...) :
  running command ‘'tlmgr' search --file --global '/tikzlibrarybackgrounds.code.tex'’ had status 2
Warning in parse_packages(logfile, quiet = c(TRUE, FALSE, FALSE)) :
  Failed to find a package that contains tikzlibrarybackgrounds.code.tex
tlmgr search --file --global '/tikzlibrarypositioning.code.tex'
TLPDB: not a directory, not loading: /home/hornik/lib/texmf/
tlmgr: running in usermode, did you call `tlmgr init-usertree'?
Warning in system2("tlmgr", args, ...) :
  running command ‘'tlmgr' search --file --global '/tikzlibrarypositioning.code.tex'’ had status 2
Warning in parse_packages(logfile, quiet = c(TRUE, FALSE, FALSE)) :
  Failed to find a package that contains tikzlibrarypositioning.code.tex
tlmgr search --file --global '/tikzlibraryarrows.code.tex'
TLPDB: not a directory, not loading: /home/hornik/lib/texmf/
tlmgr: running in usermode, did you call `tlmgr init-usertree'?
Warning in system2("tlmgr", args, ...) :
  running command ‘'tlmgr' search --file --global '/tikzlibraryarrows.code.tex'’ had status 2
Warning in parse_packages(logfile, quiet = c(TRUE, FALSE, FALSE)) :
  Failed to find a package that contains tikzlibraryarrows.code.tex
tlmgr search --file --global '/tikzlibrarymatrix.code.tex'
TLPDB: not a directory, not loading: /home/hornik/lib/texmf/
tlmgr: running in usermode, did you call `tlmgr init-usertree'?
Warning in system2("tlmgr", args, ...) :
  running command ‘'tlmgr' search --file --global '/tikzlibrarymatrix.code.tex'’ had status 2
Warning in parse_packages(logfile, quiet = c(TRUE, FALSE, FALSE)) :
  Failed to find a package that contains tikzlibrarymatrix.code.tex
tlmgr search --file --global '/tikzlibraryfit.code.tex'
TLPDB: not a directory, not loading: /home/hornik/lib/texmf/
tlmgr: running in usermode, did you call `tlmgr init-usertree'?
Warning in system2("tlmgr", args, ...) :
  running command ‘'tlmgr' search --file --global '/tikzlibraryfit.code.tex'’ had status 2
Warning in parse_packages(logfile, quiet = c(TRUE, FALSE, FALSE)) :
  Failed to find a package that contains tikzlibraryfit.code.tex
tlmgr search --file --global '/tikzlibrarycalc.code.tex'
TLPDB: not a directory, not loading: /home/hornik/lib/texmf/
tlmgr: running in usermode, did you call `tlmgr init-usertree'?
Warning in system2("tlmgr", args, ...) :
  running command ‘'tlmgr' search --file --global '/tikzlibrarycalc.code.tex'’ had status 2
Warning in parse_packages(logfile, quiet = c(TRUE, FALSE, FALSE)) :
  Failed to find a package that contains tikzlibrarycalc.code.tex
tlmgr search --file --global '/tikzlibrarytrees.code.tex'
TLPDB: not a directory, not loading: /home/hornik/lib/texmf/
tlmgr: running in usermode, did you call `tlmgr init-usertree'?
Warning in system2("tlmgr", args, ...) :
  running command ‘'tlmgr' search --file --global '/tikzlibrarytrees.code.tex'’ had status 2
Warning in parse_packages(logfile, quiet = c(TRUE, FALSE, FALSE)) :
  Failed to find a package that contains tikzlibrarytrees.code.tex
! LaTeX Error: Environment cslreferences undefined.

Error: processing vignette 'using_the_vennLasso_package.Rmd' failed with diagnostics:
Failed to compile using_the_vennLasso_package.tex. See https://yihui.name/tinytex/r/#debugging for debugging tips. See using_the_vennLasso_package.log for more info.
--- failed re-building ‘using_the_vennLasso_package.Rmd’

SUMMARY: processing the following file failed:
  ‘using_the_vennLasso_package.Rmd’

Error: Vignette re-building failed.
Execution halted