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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 ReactomeGraph4R
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* checking for file ‘ReactomeGraph4R/DESCRIPTION’ ... OK
* preparing ‘ReactomeGraph4R’:
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building ‘Introduction.Rmd’ using rmarkdown

Quitting from lines 218-223 [export-img] (Introduction.Rmd)
Error: processing vignette 'Introduction.Rmd' failed with diagnostics:
package or namespace load failed for 'ReactomeContentService4R':
 .onAttach failed in attachNamespace() for 'ReactomeContentService4R', details:
  call: curl::curl_fetch_memory(url, handle = handle)
  error: Timeout was reached: [reactome.org] SSL connection timeout
--- failed re-building ‘Introduction.Rmd’

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

Error: Vignette re-building failed.
Execution halted