Error(s) in re-building vignettes:
  ...
--- re-building ‘basics.Rmd’ using knitr
Loading required package: ggplot2
Loading required package: MASS
Loading required package: strucchange
Loading required package: zoo

Attaching package: 'zoo'

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

    as.Date, as.Date.numeric

Loading required package: sandwich
Loading required package: urca
Loading required package: lmtest
--- finished re-building ‘basics.Rmd’

--- re-building ‘plot_dist.Rmd’ using knitr
Loading required package: ggplot2
--- finished re-building ‘plot_dist.Rmd’

--- re-building ‘plot_lm.Rmd’ using knitr
--- finished re-building ‘plot_lm.Rmd’

--- re-building ‘plot_map.Rmd’ using knitr
Loading required package: maps
--- finished re-building ‘plot_map.Rmd’

--- re-building ‘plot_pca.Rmd’ using knitr
Loading required package: ggplot2
Warning: `gather_()` was deprecated in tidyr 1.2.0.
ℹ Please use `gather()` instead.
ℹ The deprecated feature was likely used in the ggfortify package.
  Please report the issue at <https://github.com/sinhrks/ggfortify/issues>.
Scale for y is already present.
Adding another scale for y, which will replace the existing scale.
--- finished re-building ‘plot_pca.Rmd’

--- re-building ‘plot_surv.Rmd’ using knitr
Loading required package: ggplot2
Warning: Using formula(x) is deprecated when x is a character vector of length > 1.
  Consider formula(paste(x, collapse = " ")) instead.
Warning: `gather_()` was deprecated in tidyr 1.2.0.
ℹ Please use `gather()` instead.
ℹ The deprecated feature was likely used in the ggfortify package.
  Please report the issue at <https://github.com/sinhrks/ggfortify/issues>.
--- finished re-building ‘plot_surv.Rmd’

--- re-building ‘plot_ts.Rmd’ using knitr
Loading required package: ggplot2
Loading required package: MASS
Loading required package: strucchange
Loading required package: zoo

Attaching package: 'zoo'

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

    as.Date, as.Date.numeric

Loading required package: sandwich
Loading required package: urca
Loading required package: lmtest
Successfully loaded changepoint package version 2.2.4
 See NEWS for details of changes.
Quitting from lines 158-167 (plot_ts.Rmd) 
Error: processing vignette ‘plot_ts.Rmd’ failed with diagnostics:
there is no package called 'dlm'
--- failed re-building ‘plot_ts.Rmd’

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

Error: Vignette re-building failed.
Execution halted