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### Running command:
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###   /Library/Frameworks/R.framework/Resources/bin/R CMD build --keep-empty-dirs --no-resave-data scDiagnostics
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* checking for file ‘scDiagnostics/DESCRIPTION’ ... OK
* preparing ‘scDiagnostics’:
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building ‘AnnotationAnomalies.Rmd’ using rmarkdown
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
2025-01-23 16:42:42.110 R[89364:366684502] XType: Using static font registry.
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
--- finished re-building ‘AnnotationAnomalies.Rmd’

--- re-building ‘DatasetMarkerGeneAlignment.Rmd’ using rmarkdown
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH

Quitting from lines 118-140 [unnamed-chunk-2] (DatasetMarkerGeneAlignment.Rmd)
Error: processing vignette 'DatasetMarkerGeneAlignment.Rmd' failed with diagnostics:
there is no package called 'scran'
--- failed re-building ‘DatasetMarkerGeneAlignment.Rmd’

--- re-building ‘VisualizationTools.Rmd’ using rmarkdown
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
--- finished re-building ‘VisualizationTools.Rmd’

--- re-building ‘scDiagnostics.Rmd’ using rmarkdown
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH

Quitting from lines 189-211 [unnamed-chunk-5] (scDiagnostics.Rmd)
Error: processing vignette 'scDiagnostics.Rmd' failed with diagnostics:
there is no package called 'scran'
--- failed re-building ‘scDiagnostics.Rmd’

SUMMARY: processing the following files failed:
  ‘DatasetMarkerGeneAlignment.Rmd’ ‘scDiagnostics.Rmd’

Error: Vignette re-building failed.
Execution halted