Error(s) in re-building vignettes:
--- re-building ‘a01_Introduction.Rmd’ using rmarkdown

Quitting from a01_Introduction.Rmd:101-103 [unnamed-chunk-7]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
NULL
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'a01_Introduction.Rmd' failed with diagnostics:
The package "flextable" is required.
--- failed re-building ‘a01_Introduction.Rmd’

--- re-building ‘a02_Generate_a_sequence_cohort.Rmd’ using rmarkdown
trying URL 'https://example-data.ohdsi.dev/GiBleed.zip'
Content type 'application/zip' length 6754786 bytes (6.4 MB)
==================================================
downloaded 6.4 MB

--- finished re-building ‘a02_Generate_a_sequence_cohort.Rmd’

--- re-building ‘a03_Summarise_sequence_ratios.Rmd’ using rmarkdown
trying URL 'https://example-data.ohdsi.dev/GiBleed.zip'
Content type 'application/zip' length 6754786 bytes (6.4 MB)
==================================================
downloaded 6.4 MB

--- finished re-building ‘a03_Summarise_sequence_ratios.Rmd’

--- re-building ‘a04_Visualise_sequence_ratios.Rmd’ using rmarkdown
trying URL 'https://example-data.ohdsi.dev/GiBleed.zip'
Content type 'application/zip' length 6754786 bytes (6.4 MB)
==================================================
downloaded 6.4 MB


Quitting from a04_Visualise_sequence_ratios.Rmd:82-84 [unnamed-chunk-5]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
NULL
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'a04_Visualise_sequence_ratios.Rmd' failed with diagnostics:
The package "flextable" is required.
--- failed re-building ‘a04_Visualise_sequence_ratios.Rmd’

--- re-building ‘a05_Summarise_temporal_symmetry.Rmd’ using rmarkdown
trying URL 'https://example-data.ohdsi.dev/GiBleed.zip'
Content type 'application/zip' length 6754786 bytes (6.4 MB)
==================================================
downloaded 6.4 MB

--- finished re-building ‘a05_Summarise_temporal_symmetry.Rmd’

--- re-building ‘a06_Visualise_temporal_symmetry.Rmd’ using rmarkdown
trying URL 'https://example-data.ohdsi.dev/GiBleed.zip'
Content type 'application/zip' length 6754786 bytes (6.4 MB)
==================================================
downloaded 6.4 MB


Quitting from a06_Visualise_temporal_symmetry.Rmd:82-84 [unnamed-chunk-5]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
NULL
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'a06_Visualise_temporal_symmetry.Rmd' failed with diagnostics:
The package "flextable" is required.
--- failed re-building ‘a06_Visualise_temporal_symmetry.Rmd’

SUMMARY: processing the following files failed:
  ‘a01_Introduction.Rmd’ ‘a04_Visualise_sequence_ratios.Rmd’
  ‘a06_Visualise_temporal_symmetry.Rmd’

Error: Vignette re-building failed.
Execution halted