failed to extract shortcode: template for shortcode "notice" not found

[CodeinLR]

hi
i have this error with all shortcode
content/_index.en.md:9:1": failed to extract shortcode: template for shortcode "notice" not found
could you help me please ?

[McShelby]

Your installation may be broken. See:
https://mcshelby.github.io/hugo-theme-relearn/basics/installation/
https://gohugo.io/getting-started/quick-start/