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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 COTAN
###
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* checking for file ‘COTAN/DESCRIPTION’ ... OK
* preparing ‘COTAN’:
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building ‘Guided_tutorial_v2.Rmd’ using rmarkdown
trying URL 'https://ftp.ncbi.nlm.nih.gov/geo/samples/GSM2861nnn/GSM2861514/suppl//GSM2861514_E175_Only_Cortical_Cells_DGE.txt.gz?tool=geoquery'
Content type 'application/x-gzip' length 1509523 bytes (1.4 MB)
==================================================
downloaded 1.4 MB

2024-04-16 16:16:02.515 R[76391:449162944] XType: Using static font registry.

Quitting from lines 170-177 [unnamed-chunk-15] (Guided_tutorial_v2.Rmd)
Error: processing vignette 'Guided_tutorial_v2.Rmd' failed with diagnostics:
function 'as_cholmod_sparse' not provided by package 'Matrix'
--- failed re-building ‘Guided_tutorial_v2.Rmd’

SUMMARY: processing the following file failed:
  ‘Guided_tutorial_v2.Rmd’

Error: Vignette re-building failed.
Execution halted