Updated error to be more expressive.

src/main.rs

@@ -108,7 +108,7 @@ async fn mtt_conn(
             result = data.clone();
         }
         Err(err) => {
-            status = match err.error_id() {
+            status = match err.get_error_ids().back().unwrap() {
                 ErrorID::DocumentNotFound => StatusCode::NOT_FOUND,
                 _ => StatusCode::INTERNAL_SERVER_ERROR,
             };