error rename

lib/pleroma/emoji/pack.ex

@@ -188,7 +188,7 @@ defmodule Pleroma.Emoji.Pack do
 
       {:ok, names}
     else
-      {:ok, %{access: _}} -> {:error, :not_writable}
+      {:ok, %{access: _}} -> {:error, :no_read_write}
       e -> e
     end
   end

lib/pleroma/web/pleroma_api/controllers/emoji_api_controller.ex

@@ -287,7 +287,7 @@ defmodule Pleroma.Web.PleromaAPI.EmojiAPIController do
     with {:ok, names} <- Pack.import_from_filesystem() do
       json(conn, names)
     else
-      {:error, :not_writable} ->
+      {:error, :no_read_write} ->
         conn
         |> put_status(:internal_server_error)
         |> json(%{error: "Error: emoji pack directory must be writable"})