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

--- re-building ‘Analysis_pipelines_for_working_with_R_dataframes.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
Loading required package: magrittr
Loading required package: pipeR
Creating a new generic function for 'univarCatDistPlots' in the global environment
Creating a new generic function for 'outlierPlot' in the global environment
Creating a new generic function for 'multiVarOutlierPlot' in the global environment
Creating a new generic function for 'ignoreCols' in the global environment
Creating a new generic function for 'getFeaturesForPyClassification' in the global environment
Creating a new generic function for 'getTargetForPyClassification' in the global environment

Attaching package: 'analysisPipelines'

The following objects are masked _by_ '.GlobalEnv':

    getFeaturesForPyClassification, getTargetForPyClassification,
    ignoreCols, multiVarOutlierPlot, outlierPlot, univarCatDistPlots

Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_textBounds, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "Arial"
Quitting from lines 162-164 (Analysis_pipelines_for_working_with_R_dataframes.Rmd) 
Error: processing vignette 'Analysis_pipelines_for_working_with_R_dataframes.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘Analysis_pipelines_for_working_with_R_dataframes.Rmd’

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

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

--- re-building ‘Meta_Pipelines.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
Loading required package: magrittr
Loading required package: pipeR
Creating a new generic function for 'univarCatDistPlots' in the global environment
Creating a new generic function for 'outlierPlot' in the global environment
Creating a new generic function for 'multiVarOutlierPlot' in the global environment
Creating a new generic function for 'ignoreCols' in the global environment
Creating a new generic function for 'getFeaturesForPyClassification' in the global environment
Creating a new generic function for 'getTargetForPyClassification' in the global environment

Attaching package: 'analysisPipelines'

The following objects are masked _by_ '.GlobalEnv':

    getFeaturesForPyClassification, getTargetForPyClassification,
    ignoreCols, multiVarOutlierPlot, outlierPlot, univarCatDistPlots

Quitting from lines 62-72 (Meta_Pipelines.Rmd) 
Error: processing vignette 'Meta_Pipelines.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘Meta_Pipelines.Rmd’

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

--- re-building ‘Using_pipelines_inside_shiny_widgets.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
Loading required package: magrittr
Loading required package: pipeR
Creating a new generic function for 'univarCatDistPlots' in the global environment
Creating a new generic function for 'outlierPlot' in the global environment
Creating a new generic function for 'multiVarOutlierPlot' in the global environment
Creating a new generic function for 'ignoreCols' in the global environment
Creating a new generic function for 'getFeaturesForPyClassification' in the global environment
Creating a new generic function for 'getTargetForPyClassification' in the global environment

Attaching package: 'analysisPipelines'

The following objects are masked _by_ '.GlobalEnv':

    getFeaturesForPyClassification, getTargetForPyClassification,
    ignoreCols, multiVarOutlierPlot, outlierPlot, univarCatDistPlots

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

SUMMARY: processing the following files failed:
  ‘Analysis_pipelines_for_working_with_R_dataframes.Rmd’
  ‘Meta_Pipelines.Rmd’

Error: Vignette re-building failed.
Execution halted