message: Better logging message
diff: @@ -864,8 +864,8 @@ impl Storage {
  false,
  )? {
  error!(
  - "Could not insert block header (maybe already inserted?): {}",
  - block_header
  + ?block_header,
  + "Could not insert block header (maybe already inserted?)",
  );
  txn.abort();
  return Ok(responder.respond(false).ignore());
  