diff --git a/webapp/services/BlockChainService.php b/webapp/services/BlockChainService.php
index 5183a3ad..e4bc30f5 100644
--- a/webapp/services/BlockChainService.php
+++ b/webapp/services/BlockChainService.php
@@ -53,7 +53,7 @@ class BlockChainService {
                 ($url,
                  $params,
                  $response)) {
-                myself()->_rspErr(500,  'server internal error 3');
+                myself()->_rspErr(500,  'server internal error 3, url:' . $url);
                 die();
                 return;
             }