Hello everyone. I’m currently following an Elixir course, and I’ve run into an error stating that the Routes module is undefined. The course I’m following is quite outdated as it was published in 2016. I’ve spent an hour searching for solutions, but I’m still clueless about how to troubleshoot this problem.

new.html.eex

<%= Form.form_for @changeset, Routes.topic_path(@conn, :create), fn f -> %>
  <%= Form.text_input(f, :topic_title) %>
  <%= Form.submit "Save Topic" %>
<% end %>

This is the error I’ve encountered

UndefinedFunctionError at GET/topics/new

function Routes.topic_path/2 is undefined (module Routes is not available)