# FAQ

If you have more questions by VuePress-Creator, welcome to Github to commit issue !


Q: The plugin @vuepress/back-to-top is configured normally and still not working? Terminal prompt: warning An error was encountered in plugin “@vuepress/back-to-top” ?
A: Try installing VuePress dependency under your project:

yarn add -D vuepress
# Or: npm install -D vuepress

Q: Why is the lastUpdated function turned on, and there is still no information displayed at the bottom of the document?
A: lastUpdated is based on the UNIX timestamp (ms) of the last git commit of each file, meaning that your project should be a git-based project in order to display the time normally.

Last Updated: 2/10/2020, 11:05:56 AM