diff --git a/server/web3bcspider/services/erc721_refresher.js b/server/web3bcspider/services/erc721_refresher.js
index 1951956..64fa7c8 100644
--- a/server/web3bcspider/services/erc721_refresher.js
+++ b/server/web3bcspider/services/erc721_refresher.js
@@ -159,6 +159,7 @@ class Erc721Refresher extends BaseService {
         ['confirm_block_number', blockNumber]
       ]);
     if (err) {
+      utils.safeDumpErrStack(err);
       log.error(logHead + tokenId + ' err:' + err);
       return false;
     }
@@ -178,6 +179,7 @@ class Erc721Refresher extends BaseService {
         ['contract_address', rawRow['contract_address']],
       ]);
     if (err) {
+      utils.safeDumpErrStack(err);
       log.error(logHead + tokenId + ' err:' + err);
       return false;
     }