Error(s) in re-building vignettes:
  ...
--- re-building ‘effect_plot.Rmd’ using rmarkdown
Using data mpg from global environment. This could cause incorrect results
if mpg has been altered since the model was fit. You can manually provide
the data to the "data =" argument.
Using data mpg from global environment. This could cause incorrect results
if mpg has been altered since the model was fit. You can manually provide
the data to the "data =" argument.
Using data Insurance from global environment. This could cause incorrect
results if Insurance has been altered since the model was fit. You can
manually provide the data to the "data =" argument.
Outcome is based on a total of 1 exposures
Using data Insurance from global environment. This could cause incorrect
results if Insurance has been altered since the model was fit. You can
manually provide the data to the "data =" argument.
Outcome is based on a total of 1 exposures
Using data Insurance from global environment. This could cause incorrect
results if Insurance has been altered since the model was fit. You can
manually provide the data to the "data =" argument.
Outcome is based on a total of 1 exposures
Using data Insurance from global environment. This could cause incorrect
results if Insurance has been altered since the model was fit. You can
manually provide the data to the "data =" argument.
Outcome is based on a total of 1 exposures
--- finished re-building ‘effect_plot.Rmd’

--- re-building ‘summ.Rmd’ using rmarkdown
Loading required package: Matrix
Quitting from lines 377-378 (summ.Rmd) 
Error: processing vignette 'summ.Rmd' failed with diagnostics:
subscript out of bounds
--- failed re-building ‘summ.Rmd’

--- re-building ‘svycor.Rmd’ using rmarkdown
Loading required package: grid
Loading required package: Matrix
Loading required package: survival

Attaching package: 'survey'

The following object is masked from 'package:graphics':

    dotchart

--- finished re-building ‘svycor.Rmd’

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

Error: Vignette re-building failed.
Execution halted