Error(s) in re-building vignettes:
  ...
--- re-building ‘RRphylo.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: ape
Loading required package: kableExtra
Loading required package: phytools
Loading required package: maps
Loading required package: geiger
--- finished re-building ‘RRphylo.Rmd’

--- re-building ‘Tree-Manipulation.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: maps
--- finished re-building ‘Tree-Manipulation.Rmd’

--- re-building ‘overfitRR.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: RRphylo
Loading required package: emmeans
--- finished re-building ‘overfitRR.Rmd’

--- re-building ‘search.conv.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 namespace: rmarkdown
PhantomJS not found. You can install it with webshot::install_phantomjs(). If it is installed, please make sure the phantomjs executable can be found via the PATH variable.
Warning in normalizePath(f2) :
  path[1]="webshot70af7ede5bf2.png": No such file or directory
Warning in file(con, "rb") :
  cannot open file 'webshot70af7ede5bf2.png': No such file or directory
Quitting from lines 225-302 (search.conv.Rmd) 
Error: processing vignette 'search.conv.Rmd' failed with diagnostics:
cannot open the connection
--- failed re-building ‘search.conv.Rmd’

--- re-building ‘search.shift.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: ape
Loading required package: phytools
Loading required package: maps
Loading required package: geiger
Loading required package: scales

Attaching package: 'scales'

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

    rescale

Loading required package: kableExtra
Loading required package: plotrix

Attaching package: 'plotrix'

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

    rescale

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

    rescale

Loading required package: RColorBrewer
--- finished re-building ‘search.shift.Rmd’

--- re-building ‘search.trend.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: ape
Loading required package: geiger
Loading required package: phytools
Loading required package: maps
Loading required package: ddpcr

Attaching package: 'ddpcr'

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

    step

Loading required package: kableExtra
Loading required package: plotrix

Attaching package: 'plotrix'

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

    rescale

--- finished re-building ‘search.trend.Rmd’

--- re-building ‘swapONE.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: ape
Loading required package: phytools
Loading required package: maps
Loading required package: geiger
--- finished re-building ‘swapONE.Rmd’

SUMMARY: processing the following file failed:
  ‘search.conv.Rmd’

Error: Vignette re-building failed.
Execution halted