I created a vocabulary for the nodes.
I installed the Easy Breadcrumb module.
When a node is tagged, for example, with Crypto and ICO, the breadcrumb should be the following one.
Accueil >> Crypto >> ICO >> Node Title
Home >> Term >> Sub-term >> Node Title
Nodes will only have a single term or a term and a sub-term.
Currently it does not work.
I also installed the Taxonomy Menu module.
The structure of the taxonomy is therefore exactly the same as that of the main menu, but nodes aren't attached to menus.
Does anyone have a solution?