Remove println

core/error.rs

@@ -157,7 +157,6 @@ pub fn to_v8_error<'a>(
         // XXX: Prevent panic "Custom error class must have a builder registered: Uncaught null"
         // from taking down the whole process. Return the underlying error message instead.
         if js_error.exception_message == "Uncaught null" {
-          println!("to_v8_error: {msg}");
           return message.into();
         }
       }