remove debug prints

app_async/src/main.rs

@@ -158,14 +158,9 @@ async fn read_from_db(id: u32) -> Option<Question> {
         id as usize - 1
     };
 
-    println!("{}", &index); // DEBUG
-
     match reader.get(index).await {
         Ok(question) => Some(question),
-        Err(e) => {
+        Err(_) => None
-            println!("{:#?}", e); // DEBUG
-            None
-        }
     }
 }
 async fn write_db() {