Create Menu Strapi

System Information
  • Strapi Version: v3.6.6
  • Operating System: MAC OS 11.5.1
  • Database: Mongo
  • Node Version: v14.17.2
  • NPM Version: 6.14.3

I tried to create a submenu as on this link Create a menu for your jamstack website | Strapi.
But when I want to get the links of submenu, I only get an array ids instead of an array of objects.
I tried to use populate but it doesn’t work.

Excuse my english I’m french.