Bug: Search by tags in the “Repositories” section does not work

[sergiozeppo]

Summary

Translation of the #445 Issue by @Olgatestonline

Reproduction steps

1. Click on key tag = “Python”
2. Check the answers in DevTools

Expected result

The page should display repositories that use the programming language selected by the tagged language
The server sent a response 200 OK

Actual result

The search is not performed, the application gives an error.
The server sent responses 404, 503

Browsers

Firefox

OS

Windows