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### Running command:
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###   /home/biocbuild/bbs-3.22-bioc/R/bin/R CMD build --keep-empty-dirs --no-resave-data --md5 universalmotif
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* checking for file ‘universalmotif/DESCRIPTION’ ... OK
* preparing ‘universalmotif’:
* checking DESCRIPTION meta-information ... OK
* cleaning src
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building ‘Introduction.Rmd’ using rmarkdown
--- finished re-building ‘Introduction.Rmd’

--- re-building ‘IntroductionToSequenceMotifs.Rmd’ using rmarkdown
--- finished re-building ‘IntroductionToSequenceMotifs.Rmd’

--- re-building ‘MotifComparisonAndPvalues.Rmd’ using rmarkdown
--- finished re-building ‘MotifComparisonAndPvalues.Rmd’

--- re-building ‘MotifManipulation.Rmd’ using rmarkdown
--- finished re-building ‘MotifManipulation.Rmd’

--- re-building ‘SequenceSearches.Rmd’ using rmarkdown

Quitting from SequenceSearches.Rmd:374-404 [unnamed-chunk-20]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `validObject()`:
! invalid class "GGbio" object: invalid object for slot "ggplot" in class "GGbio": got class "ggplot2::ggplot", should be or extend class "gg_OR_NULL"
---
Backtrace:
     x
  1. +-ggplot2::autoplot(...)
  2. \-ggbio::autoplot(...)
  3.   \-ggbio (local) .local(object, ...)
  4.     \-ggbio::GGbio(p, data = object)
  5.       +-BiocGenerics::do.call(...)
  6.       +-base::do.call(...)
  7.       \-methods (local) `<fn>`(...)
  8.         +-methods::initialize(value, ...)
  9.         \-methods::initialize(value, ...)
 10.           \-methods::validObject(.Object)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'SequenceSearches.Rmd' failed with diagnostics:
invalid class "GGbio" object: invalid object for slot "ggplot" in class "GGbio": got class "ggplot2::ggplot", should be or extend class "gg_OR_NULL"
--- failed re-building ‘SequenceSearches.Rmd’

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

Error: Vignette re-building failed.
Execution halted