Error(s) in re-building vignettes:
--- re-building ‘DataExploration.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: sp
rgdal: version: 1.4-8, (SVN revision 845)
 Geospatial Data Abstraction Library extensions to R successfully loaded
 Loaded GDAL runtime: GDAL 2.4.2, released 2019/06/28
 Path to GDAL shared files: /Volumes/SSD-Data/Builds/R-dev-web/QA/Simon/packages/el-capitan-x86_64/Rlib/3.6/rgdal/gdal
 GDAL binary built with GEOS: FALSE 
 Loaded PROJ.4 runtime: Rel. 5.2.0, September 15th, 2018, [PJ_VERSION: 520]
 Path to PROJ.4 shared files: /Volumes/SSD-Data/Builds/R-dev-web/QA/Simon/packages/el-capitan-x86_64/Rlib/3.6/rgdal/proj
 Linking to sp version: 1.3-2 
--- finished re-building ‘DataExploration.Rmd’

--- re-building ‘DataExtraction.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.
This is secr 4.1.0. For overview type ?secr
Quitting from lines 51-55 (DataExtraction.Rmd) 
Error: processing vignette 'DataExtraction.Rmd' failed with diagnostics:
cannot find ExifTool
--- failed re-building ‘DataExtraction.Rmd’

--- re-building ‘ImageOrganisation.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.
Quitting from lines 235-250 (ImageOrganisation.Rmd) 
Error: processing vignette 'ImageOrganisation.Rmd' failed with diagnostics:
cannot find ExifTool
--- failed re-building ‘ImageOrganisation.Rmd’

--- re-building ‘SpeciesIndividualIdentification.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.
Quitting from lines 182-205 (SpeciesIndividualIdentification.Rmd) 
Error: processing vignette 'SpeciesIndividualIdentification.Rmd' failed with diagnostics:
Not Found (HTTP 404)
--- failed re-building ‘SpeciesIndividualIdentification.Rmd’

SUMMARY: processing the following files failed:
  ‘DataExtraction.Rmd’ ‘ImageOrganisation.Rmd’
  ‘SpeciesIndividualIdentification.Rmd’

Error: Vignette re-building failed.
Execution halted