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### Running command:
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###   chmod a+r iSEEhub -R && C:\Users\biocbuild\bbs-3.20-bioc\R\bin\R.exe CMD build --keep-empty-dirs --no-resave-data iSEEhub
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* checking for file 'iSEEhub/DESCRIPTION' ... OK
* preparing 'iSEEhub':
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building 'contributing.Rmd' using rmarkdown
Error: processing vignette 'contributing.Rmd' failed with diagnostics:
Pandoc is required to build R Markdown vignettes but not available. Please make sure it is installed.
--- failed re-building 'contributing.Rmd'

--- re-building 'iSEEhub.Rmd' using rmarkdown
Error: processing vignette 'iSEEhub.Rmd' failed with diagnostics:
Pandoc is required to build R Markdown vignettes but not available. Please make sure it is installed.
--- failed re-building 'iSEEhub.Rmd'

SUMMARY: processing the following files failed:
  'contributing.Rmd' 'iSEEhub.Rmd'

Error: Vignette re-building failed.
Execution halted