Where is the code-tabs-item block plugin?

[zuiwuchang]

I created a book on gitbook.io and cloned the repo to my local in order to generate a website output. I encountered the following error:

$ gitbook serve 
Live reload server started on port: 35729
Press CTRL+C to quit ...

info: 7 plugins are installed 
info: loading plugin "livereload"... OK 
info: loading plugin "highlight"... OK 
info: loading plugin "search"... OK 
info: loading plugin "lunr"... OK 
info: loading plugin "sharing"... OK 
info: loading plugin "fontsettings"... OK 
info: loading plugin "theme-default"... OK 
info: found 7 pages 
info: found 2 asset files 
error: error while generating page "XXX.md": 

Template render error: (/XXX.md) [Line 41, Column 17]
  parseSignature: expected comma after expression

XXX.md [Line 41, Column 17]

{% code-tabs-item title="app.component.ts" %}