Error(s) in re-building vignettes:
--- re-building 'Exposure_Response_Example.Rmd' using rmarkdown
Building exprespmodel ... done.
`geom_smooth()` using formula 'y ~ x'
Picking joint bandwidth of 0.714
Picking joint bandwidth of 0.0318
Picking joint bandwidth of 0.163
Picking joint bandwidth of 0.0356
Picking joint bandwidth of 0.105
Picking joint bandwidth of 0.0242
Picking joint bandwidth of 0.146
Picking joint bandwidth of 0.0357
--- finished re-building 'Exposure_Response_Example.Rmd'

--- re-building 'PKPD_Example.Rmd' using rmarkdown
Joining, by = "paramname"
Scale for 'x' is already present. Adding another scale for 'x', which will
replace the existing scale.
Picking joint bandwidth of 0.0303
Picking joint bandwidth of 0.0384
Picking joint bandwidth of 0.034
Picking joint bandwidth of 0.0303
Picking joint bandwidth of 0.0377
Picking joint bandwidth of 0.0334
Picking joint bandwidth of 0.0303
Picking joint bandwidth of 0.0376
Picking joint bandwidth of 0.0338
Picking joint bandwidth of 0.0303
Picking joint bandwidth of 0.0372
Picking joint bandwidth of 0.0339
Picking joint bandwidth of 0.0363
Picking joint bandwidth of 0.0458
Picking joint bandwidth of 0.0368
Picking joint bandwidth of 0.0303
Picking joint bandwidth of 0.0374
Picking joint bandwidth of 0.0338
Scale for 'x' is already present. Adding another scale for 'x', which will
replace the existing scale.
--- finished re-building 'PKPD_Example.Rmd'

--- re-building 'PK_Example.Rmd' using rmarkdown
Picking joint bandwidth of 0.031
Picking joint bandwidth of 0.064
Picking joint bandwidth of 0.0107
Picking joint bandwidth of 0.031
Picking joint bandwidth of 0.064
Picking joint bandwidth of 0.0107
Dropping non-numeric columns: 
  covname
Quitting from lines 349-401 (PK_Example.Rmd) 
Error: processing vignette 'PK_Example.Rmd' failed with diagnostics:
Assigned data `factor(...)` must be compatible with existing data.
x Existing data has 2400 rows.
x Assigned data has 800 rows.
i Only vectors of size 1 are recycled.
--- failed re-building 'PK_Example.Rmd'

--- re-building 'introduction_to_coveffectsplot.Rmd' using rmarkdown
--- finished re-building 'introduction_to_coveffectsplot.Rmd'

SUMMARY: processing the following file failed:
  'PK_Example.Rmd'

Error: Vignette re-building failed.
Execution halted