Error(s) in re-building vignettes:
  ...
--- re-building ‘textplot-examples.Rnw’ using knitr

Attaching package: 'igraph'

The following objects are masked from 'package:stats':

    decompose, spectrum

The following object is masked from 'package:base':

    union

Downloading udpipe model from https://raw.githubusercontent.com/jwijffels/udpipe.models.ud.2.5/master/inst/udpipe-ud-2.5-191206/english-ewt-ud-2.5-191206.udpipe to /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/textplot.Rcheck/vign_test/textplot/vignettes/english-ewt-ud-2.5-191206.udpipe
 - This model has been trained on version 2.5 of data from https://universaldependencies.org
 - The model is distributed under the CC-BY-SA-NC license: https://creativecommons.org/licenses/by-nc-sa/4.0
 - Visit https://github.com/jwijffels/udpipe.models.ud.2.5 for model license details.
 - For a list of all models and their licenses (most models you can download with this package have either a CC-BY-SA or a CC-BY-SA-NC license) read the documentation at ?udpipe_download_model. For building your own models: visit the documentation by typing vignette('udpipe-train', package = 'udpipe')
trying URL ‘https://raw.githubusercontent.com/jwijffels/udpipe.models.ud.2.5/master/inst/udpipe-ud-2.5-191206/english-ewt-ud-2.5-191206.udpipe’
Content type 'application/octet-stream' length 16309608 bytes (15.6 MB)
==================================================
downloaded 15.6 MB

Downloading finished, model stored at '/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/textplot.Rcheck/vign_test/textplot/vignettes/english-ewt-ud-2.5-191206.udpipe'
Downloading udpipe model from https://raw.githubusercontent.com/jwijffels/udpipe.models.ud.2.5/master/inst/udpipe-ud-2.5-191206/dutch-alpino-ud-2.5-191206.udpipe to /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/textplot.Rcheck/vign_test/textplot/vignettes/dutch-alpino-ud-2.5-191206.udpipe
 - This model has been trained on version 2.5 of data from https://universaldependencies.org
 - The model is distributed under the CC-BY-SA-NC license: https://creativecommons.org/licenses/by-nc-sa/4.0
 - Visit https://github.com/jwijffels/udpipe.models.ud.2.5 for model license details.
 - For a list of all models and their licenses (most models you can download with this package have either a CC-BY-SA or a CC-BY-SA-NC license) read the documentation at ?udpipe_download_model. For building your own models: visit the documentation by typing vignette('udpipe-train', package = 'udpipe')
trying URL ‘https://raw.githubusercontent.com/jwijffels/udpipe.models.ud.2.5/master/inst/udpipe-ud-2.5-191206/dutch-alpino-ud-2.5-191206.udpipe’
Content type 'application/octet-stream' length 17047727 bytes (16.3 MB)
==================================================
downloaded 16.3 MB

Downloading finished, model stored at '/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/textplot.Rcheck/vign_test/textplot/vignettes/dutch-alpino-ud-2.5-191206.udpipe'

Attaching package: 'BiocGenerics'

The following objects are masked from 'package:igraph':

    normalize, path, union

The following objects are masked from 'package:stats':

    IQR, mad, sd, var, xtabs

The following objects are masked from 'package:base':

    Filter, Find, Map, Position, Reduce, anyDuplicated, append,
    as.data.frame, basename, cbind, colnames, dirname, do.call,
    duplicated, eval, evalq, get, grep, grepl, intersect, is.unsorted,
    lapply, mapply, match, mget, order, paste, pmax, pmax.int, pmin,
    pmin.int, rank, rbind, rownames, sapply, setdiff, sort, table,
    tapply, union, unique, unsplit, which.max, which.min


Attaching package: 'graph'

The following objects are masked from 'package:igraph':

    degree, edges, intersection


Attaching package: 'qgraph'

The following object is masked from 'package:ggraph':

    qgraph

Error: processing vignette ‘textplot-examples.Rnw’ failed with diagnostics:
Running ‘texi2dvi’ on ‘textplot-examples.tex’ failed.
LaTeX errors:
! Missing $ inserted.
<inserted text> 
                $
l.97             "english")plt <- textplot_
                                           dependencyparser(x, size = 4)pltf...
! Emergency stop.
<inserted text> 
                $
l.97             "english")plt <- textplot_
                                           dependencyparser(x, size = 4)pltf...
!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘textplot-examples.Rnw’

SUMMARY: processing the following file failed:
  ‘textplot-examples.Rnw’

Error: Vignette re-building failed.
Execution halted