Troubleshooting Code: (KeyError) key :changeset not found

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I actually did find the answer I combed the code and found that there were two functions. I am running into a new error that is confusing me!

Now I have a new error compile error. The function does exist but, cannot be found.Do you think it was to do with the alias (referencing) the component?

Error:

== Compilation error in file lib/blog_app_web/views/post_view.ex ==
** (CompileError) lib/blog_app_web/views/post_view.ex:2: module BlogWeb is not loaded and could not be found
    (elixir 1.13.3) expanding macro: Kernel.use/2
    lib/blog_app_web/views/post_view.ex:2: BlogWeb.PostView (module)

Post_view.ex:

defmodule BlogWeb.PostView do
	use BlogWeb, :view
	alias BlogApp.Posts

	def get_comments_count(post_id) do
		Posts.get_number_of_comments(post_id)
	end
end
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