My sincere apologies for answering in English, I hope someone can help translate 
The websites you’re trying to reach are v2 onion services. You can identify the version of onion service by its length (16 or 56)
A v2 onion is a string of 16 mostly random letters and numbers, followed by “.onion”. Example: http://3g2upl4pq6kufc4m.onion/
A v3 onion is a string of 56 mostly random letters and numbers, followed by “.onion”. Example: http://2gzyxa5ihm7nsggfxnu52rck2vv4rvmdlkiu3zzui5du4xyclen53wid.onion/
v2 onion services has been deprecated in Tor 0.4.6.x and has ceased to work since 2021.
You can read more about this in the support entry I linked to before, Dépréciation des services onion V2 | Projet Tor | Assistance (the page is localized in French).