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

processing vignette 'vip.Rmd' failed with diagnostics:

Vignette re-building failed.

Build process failed

Process completed with exit code 1.

The vignette title specified in \VignetteIndexEntry{} is different from the title in the YAML metadata. The former is "vip", and the latter is "Variable Importance Plots—An Introduction to the vip Package". If that is intentional, you may set options(rmarkdown.html_vignette.check_title = FALSE) to suppress this check.