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

Quitting from lines 201-203 [unnamed-chunk-12] (MsBackendMetaboLights.Rmd)
Error: processing vignette 'MsBackendMetaboLights.Rmd' failed with diagnostics:
Failed to connect to MetaboLights. No internet connection? Does the data set "MTBLS39" exist?
 - cannot open the connection
--- failed re-building ‘MsBackendMetaboLights.Rmd’

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

Error: Vignette re-building failed.
Execution halted