Error 404 when switching to custom taxonomy... What am I doing wrong?

Question

Taxonomy

Hello people!
I just can’t understand this circumstance:
A custom entry has been added and a taxonomy has been added to it.
Custom entry example: "services"
Taxonomy example: "services category"
Create a custom entry in "services" , say "hello world" and get the path: Create a "services category" , say "world" , and add an entry to it " hello world" . When switching to the "world", we get the address: but the output goes to the 404.php page Since a template has been made for the custom entry, the single- uslugi template is loaded at the address:.
http://localhost:8089/uslugi/privet_mir/

http://localhost:8089/uslugi/mir/
http://localhost:8089/uslugi/privet_mir/
If we go to: then the archive-uslugi.phphttp://localhost:8089/uslugi/ template is loaded , which displays a menu with all custom entries. As far as I understand, if you create a taxonomy-mir.php template, then when you go to: at least the template contained in taxonomy-mir.php should be displayed Question: Why does a 404 error occur when you go to :?
http://localhost:8089/uslugi/mir/

http://localhost:8089/uslugi/mir/