Error(s) in re-building vignettes:
--- re-building ‘camtrapr1.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 288-303 (camtrapr1.Rmd) 
Error: processing vignette 'camtrapr1.Rmd' failed with diagnostics:
cannot find ExifTool
--- failed re-building ‘camtrapr1.Rmd’

--- re-building ‘camtrapr2.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 356-364 (camtrapr2.Rmd) 
Error: processing vignette 'camtrapr2.Rmd' failed with diagnostics:
cannot find ExifTool
--- failed re-building ‘camtrapr2.Rmd’

--- re-building ‘camtrapr3.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 4.2.2. For overview type ?secr
Quitting from lines 53-57 (camtrapr3.Rmd) 
Error: processing vignette 'camtrapr3.Rmd' failed with diagnostics:
cannot find ExifTool
--- failed re-building ‘camtrapr3.Rmd’

--- re-building ‘camtrapr4.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 ‘camtrapr4.Rmd’

SUMMARY: processing the following files failed:
  ‘camtrapr1.Rmd’ ‘camtrapr2.Rmd’ ‘camtrapr3.Rmd’

Error: Vignette re-building failed.
Execution halted