Error(s) in re-building vignettes:
  ...
--- re-building ‘getting-started.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Loading required package: parsnip
Loading required package: rugarch
Loading required package: parallel

Attaching package: 'rugarch'

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

    sigma

Loading required package: rmgarch
── Attaching packages ────────────────────────────────────── tidymodels 0.1.2 ──
✔ broom     0.7.6      ✔ recipes   0.1.15
✔ dials     0.0.9      ✔ rsample   0.0.9 
✔ dplyr     1.0.5      ✔ tibble    3.1.0 
✔ ggplot2   3.3.3      ✔ tidyr     1.1.3 
✔ infer     0.5.4      ✔ tune      0.1.3 
✔ modeldata 0.1.0      ✔ workflows 0.2.2 
✔ purrr     0.3.4      ✔ yardstick 0.0.8 
── Conflicts ───────────────────────────────────────── tidymodels_conflicts() ──
✖ purrr::discard() masks scales::discard()
✖ dplyr::filter()  masks stats::filter()
✖ dplyr::first()   masks rmgarch::first()
✖ dplyr::lag()     masks stats::lag()
✖ dplyr::last()    masks rmgarch::last()
✖ purrr::reduce()  masks rugarch::reduce()
✖ recipes::step()  masks stats::step()
Found more than one class "atomicVector" in cache; using the first, from namespace 'Matrix'
Also defined by 'Rmpfr'
Found more than one class "atomicVector" in cache; using the first, from namespace 'Matrix'
Also defined by 'Rmpfr'
Found more than one class "atomicVector" in cache; using the first, from namespace 'Matrix'
Also defined by 'Rmpfr'
Found more than one class "atomicVector" in cache; using the first, from namespace 'Matrix'
Also defined by 'Rmpfr'
Found more than one class "atomicVector" in cache; using the first, from namespace 'Matrix'
Also defined by 'Rmpfr'
Found more than one class "atomicVector" in cache; using the first, from namespace 'Matrix'
Also defined by 'Rmpfr'
Found more than one class "atomicVector" in cache; using the first, from namespace 'Matrix'
Also defined by 'Rmpfr'
Found more than one class "atomicVector" in cache; using the first, from namespace 'Matrix'
Also defined by 'Rmpfr'
Found more than one class "atomicVector" in cache; using the first, from namespace 'Matrix'
Also defined by 'Rmpfr'
Found more than one class "atomicVector" in cache; using the first, from namespace 'Matrix'
Also defined by 'Rmpfr'
Found more than one class "atomicVector" in cache; using the first, from namespace 'Matrix'
Also defined by 'Rmpfr'
Found more than one class "atomicVector" in cache; using the first, from namespace 'Matrix'
Also defined by 'Rmpfr'
── Attaching packages ─────────────────────────────────────── tidyverse 1.3.0 ──
✔ readr   1.4.0     ✔ forcats 0.5.1
✔ stringr 1.4.0     
── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
✖ readr::col_factor() masks scales::col_factor()
✖ purrr::discard()    masks scales::discard()
✖ dplyr::filter()     masks stats::filter()
✖ dplyr::first()      masks rmgarch::first()
✖ stringr::fixed()    masks recipes::fixed()
✖ dplyr::lag()        masks stats::lag()
✖ dplyr::last()       masks rmgarch::last()
✖ purrr::reduce()     masks rugarch::reduce()
✖ readr::spec()       masks yardstick::spec()
.date_var is missing. Using: date
Quitting from lines 68-75 (getting-started.Rmd) 
Timing stopped at: 0.017 0.003 0.019
Error: processing vignette 'getting-started.Rmd' failed with diagnostics:
there is no package called 'StanHeaders'
--- failed re-building ‘getting-started.Rmd’

SUMMARY: processing the following file failed:
  ‘getting-started.Rmd’

Error: Vignette re-building failed.
Execution halted