Fixed crash while trying to get DLC with invalid AppID

Utils/Secrets.EXAMPLE.cs

@@ -0,0 +1,14 @@
+namespace auto_creamapi.Utils
+{
+    /// <summary>
+    /// To use this:
+    /// Rename file Secrets.EXAMPLE.cs to Secrets.cs
+    /// Rename class Secrets_REMOVETHIS to Secrets
+    /// Enter the relevant info below
+    /// </summary>
+    public class Secrets_REMOVETHIS
+    {
+        public const string Username = "Enter username here";
+        public const string Password = "Enter password here";
+    }
+}