Error(s) in re-building vignettes:
--- re-building ‘localMethods.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.
Warning: 'rgl.init' failed, running with 'rgl.useNULL = TRUE'.
Loading required package: plotly
Loading required package: ggplot2

Attaching package: 'plotly'

The following object is masked from 'package:ggplot2':

    last_plot

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

    filter

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

    layout

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]="webshot15d615ae29b81.png": No such file or directory
Warning in file(con, "rb") :
  cannot open file 'webshot15d615ae29b81.png': No such file or directory
Quitting from lines 43-46 (localMethods.Rmd) 
Error: processing vignette 'localMethods.Rmd' failed with diagnostics:
cannot open the connection
--- failed re-building ‘localMethods.Rmd’

--- re-building ‘splineML.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.
Warning: 'rgl.init' failed, running with 'rgl.useNULL = TRUE'.
Loading required package: plotly
Loading required package: ggplot2

Attaching package: 'plotly'

The following object is masked from 'package:ggplot2':

    last_plot

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

    filter

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

    layout

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]="webshot15d7054e363b4.png": No such file or directory
Warning in file(con, "rb") :
  cannot open file 'webshot15d7054e363b4.png': No such file or directory
Quitting from lines 43-46 (splineML.Rmd) 
Error: processing vignette 'splineML.Rmd' failed with diagnostics:
cannot open the connection
--- failed re-building ‘splineML.Rmd’

SUMMARY: processing the following files failed:
  ‘localMethods.Rmd’ ‘splineML.Rmd’

Error: Vignette re-building failed.
Execution halted