Error(s) in re-building vignettes:
--- re-building ‘altbin-teratology.Rnw’ using knitr
--- finished re-building ‘altbin-teratology.Rnw’

--- re-building ‘binary-unemployment.Rnw’ using knitr
--- finished re-building ‘binary-unemployment.Rnw’

--- re-building ‘binary-vaso.Rnw’ using knitr
--- finished re-building ‘binary-vaso.Rnw’

--- re-building ‘count-children.Rnw’ using knitr
--- finished re-building ‘count-children.Rnw’

--- re-building ‘count-encephalitis.Rnw’ using knitr
--- finished re-building ‘count-encephalitis.Rnw’

--- re-building ‘count-insolvency.Rnw’ using knitr
--- finished re-building ‘count-insolvency.Rnw’

--- re-building ‘count-medcare.Rnw’ using knitr
--- finished re-building ‘count-medcare.Rnw’

--- re-building ‘loglinear-birth.Rnw’ using knitr
--- finished re-building ‘loglinear-birth.Rnw’

--- re-building ‘loglinear-leukoplakia.Rnw’ using knitr
--- finished re-building ‘loglinear-leukoplakia.Rnw’

--- re-building ‘modbin-dust.Rnw’ using knitr
--- finished re-building ‘modbin-dust.Rnw’

--- re-building ‘modbin-foodstamp.Rnw’ using knitr
--- finished re-building ‘modbin-foodstamp.Rnw’

--- re-building ‘modbin-unemployment1.Rnw’ using knitr
--- finished re-building ‘modbin-unemployment1.Rnw’

--- re-building ‘modbin-unemployment2.Rnw’ using knitr
--- finished re-building ‘modbin-unemployment2.Rnw’

--- re-building ‘multinomial-addiction1.Rnw’ using knitr
--- finished re-building ‘multinomial-addiction1.Rnw’

--- re-building ‘multinomial-addiction2.Rnw’ using knitr
--- finished re-building ‘multinomial-addiction2.Rnw’

--- re-building ‘multinomial-party1.Rnw’ using knitr
--- finished re-building ‘multinomial-party1.Rnw’

--- re-building ‘multinomial-party2.Rnw’ using knitr
--- finished re-building ‘multinomial-party2.Rnw’

--- re-building ‘multinomial-travel.Rnw’ using knitr
--- finished re-building ‘multinomial-travel.Rnw’

--- re-building ‘multivariate-birth1.Rnw’ using knitr
--- finished re-building ‘multivariate-birth1.Rnw’

--- re-building ‘multivariate-birth2.Rnw’ using knitr
--- finished re-building ‘multivariate-birth2.Rnw’

--- re-building ‘multivariate-knee.Rnw’ using knitr
--- finished re-building ‘multivariate-knee.Rnw’

--- re-building ‘ordinal-arthritis.Rnw’ using knitr
--- finished re-building ‘ordinal-arthritis.Rnw’

--- re-building ‘ordinal-knee1.Rnw’ using knitr
--- finished re-building ‘ordinal-knee1.Rnw’

--- re-building ‘ordinal-knee2.Rnw’ using knitr
--- finished re-building ‘ordinal-knee2.Rnw’

--- re-building ‘ordinal-retinopathy1.Rnw’ using knitr
--- finished re-building ‘ordinal-retinopathy1.Rnw’

--- re-building ‘ordinal-retinopathy2.Rnw’ using knitr

Quitting from ordinal-retinopathy2.Rnw:40-44 [unnamed-chunk-5]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `get()`:
! object 'logit' not found
---
Backtrace:
    x
 1. +-VGAM::vglm(...)
 2. \-VGAM::sratio(link = "logit", parallel = FALSE)
 3.   \-VGAM::link2list(link)
 4.     +-base::as.list(as.function(get(fun.name)))
 5.     +-base::as.function(get(fun.name))
 6.     \-base::get(fun.name)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'ordinal-retinopathy2.Rnw' failed with diagnostics:
object 'logit' not found
--- failed re-building ‘ordinal-retinopathy2.Rnw’

--- re-building ‘prediction-medcare.Rnw’ using knitr
--- finished re-building ‘prediction-medcare.Rnw’

--- re-building ‘random-aids.Rnw’ using knitr
--- finished re-building ‘random-aids.Rnw’

--- re-building ‘random-betablocker.Rnw’ using knitr
--- finished re-building ‘random-betablocker.Rnw’

--- re-building ‘random-knee1.Rnw’ using knitr
--- finished re-building ‘random-knee1.Rnw’

--- re-building ‘random-knee2.Rnw’ using knitr
--- finished re-building ‘random-knee2.Rnw’

--- re-building ‘random-knee3.Rnw’ using knitr
--- finished re-building ‘random-knee3.Rnw’

--- re-building ‘semiparametric-addiction.Rnw’ using knitr
--- finished re-building ‘semiparametric-addiction.Rnw’

--- re-building ‘semiparametric-children.Rnw’ using knitr
--- finished re-building ‘semiparametric-children.Rnw’

--- re-building ‘semiparametric-dust.Rnw’ using knitr
--- finished re-building ‘semiparametric-dust.Rnw’

--- re-building ‘semiparametric-unemployment.Rnw’ using knitr
--- finished re-building ‘semiparametric-unemployment.Rnw’

--- re-building ‘tree-dust.Rnw’ using knitr
--- finished re-building ‘tree-dust.Rnw’

--- re-building ‘tree-unemployment.Rnw’ using knitr
--- finished re-building ‘tree-unemployment.Rnw’

SUMMARY: processing the following file failed:
  ‘ordinal-retinopathy2.Rnw’

Error: Vignette re-building failed.
Execution halted