Error(s) in re-building vignettes:
  ...
Abort - core dumped
--- re-building ‘multivariate_irregular.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.

Attaching package: 'dplyr'

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

    filter, lag

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

    intersect, setdiff, setequal, union

terminate called without an active exception
Abort - core dumped
--- re-building ‘univariate_gridded.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.

Attaching package: 'dplyr'

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

    filter, lag

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

    intersect, setdiff, setequal, union

terminate called recursively
terminate called after throwing an instance of 'std::runtime_error'
  what():  chol(): decomposition failed
Abort - core dumped
Warning in readLines(tf) :
  incomplete final line found on '/tmp/RtmpItaqid/working_dir/RtmpY1aGio/file1c4424a26eec'
--- re-building ‘univariate_irregular.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.

Attaching package: 'dplyr'

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

    filter, lag

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

    intersect, setdiff, setequal, union

terminate called after throwing an instance of 'std::runtime_error'
terminate called recursively

 *** caught 
--- re-building ‘univariate_irregular_poisson.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.

Attaching package: 'dplyr'

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

    filter, lag

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

    intersect, setdiff, setequal, union

--- finished re-building ‘univariate_irregular_poisson.Rmd’

SUMMARY: processing the following files failed:
  ‘multivariate_irregular.Rmd’ ‘univariate_gridded.Rmd’
  ‘univariate_irregular.Rmd’

Error: Vignette re-building failed.
Execution halted