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

Quitting from lines 102-110 [unnamed-chunk-5] (immApex.Rmd)
Error: processing vignette 'immApex.Rmd' failed with diagnostics:
no applicable method for 'compile' applied to an object of class "c('keras.engine.functional.Functional', 'keras.engine.training.Model', 'keras.engine.base_layer.Layer', 'tensorflow.python.module.module.Module', 'tensorflow.python.trackable.autotrackable.AutoTrackable', 'tensorflow.python.trackable.base.Trackable', 'keras.utils.version_utils.LayerVersionSelector', 'keras.utils.version_utils.ModelVersionSelector', 'python.builtin.object')"
--- failed re-building ‘immApex.Rmd’

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

Error: Vignette re-building failed.
Execution halted