Fixed user.avatar failure. Ran mix format.

lib/philomena_web/award_json.ex

@@ -1,5 +1,4 @@
 defmodule PhilomenaWeb.AwardsJson do
-
   def as_json(_conn, award) do
     %{
       image_url: badge_url_root() <> "/" <> award.badge.image,

lib/philomena_web/controllers/api/json/profile_controller.ex

@@ -10,7 +10,7 @@ defmodule PhilomenaWeb.Api.Json.ProfileController do
     profile =
       User
       |> where(id: ^id)
-      |> preload([public_links: :tag, awards: :badge])
+      |> preload(public_links: :tag, awards: :badge)
       |> Repo.one()
 
     cond do

lib/philomena_web/links_json.ex

@@ -1,5 +1,4 @@
 defmodule PhilomenaWeb.LinksJson do
-
   def as_json(_conn, %{public: false}), do: nil
 
   def as_json(_conn, link) do

lib/philomena_web/user_json.ex

@@ -1,5 +1,4 @@
 defmodule PhilomenaWeb.UserJson do
-
   alias PhilomenaWeb.LinksJson
   alias PhilomenaWeb.AwardsJson
 
@@ -10,7 +9,7 @@ defmodule PhilomenaWeb.UserJson do
       slug: user.slug,
       role: role(user),
       description: user.description,
-      avatar_url: avatar_url_root() <> "/" <> user.avatar,
+      avatar_url: avatar_url(user),
       created_at: user.created_at,
       comments_count: user.comments_posted_count,
       uploads_count: user.uploads_count,
@@ -29,7 +28,11 @@ defmodule PhilomenaWeb.UserJson do
     user.role
   end
 
-  defp avatar_url_root do
+  defp avatar_url(%{avatar: nil}) do
-    Application.get_env(:philomena, :avatar_url_root)
+    nil
+  end
+
+  defp avatar_url(user) do
+    Application.get_env(:philomena, :avatar_url_root) <> "/" <> user.avatar
   end
 end