transaction: handle error

lib/transactions.js

@@ -231,6 +231,9 @@ TxController.prototype.list = function(req, res) {
       }
 
       self.node.services.bitcoind.getBlockHeader(block.hash, function(err, blockInfo) {
+        if (err) {
+          return common.handleErrors(err, res);
+        }
         var totalTxs = block.transactions.length;
         var txs;