fix

@@ -31,7 +31,7 @@ class MySqlSender {
         for (let i of bulk) {
         for (let i of bulk) {
             log('insert %0', i);
             log('insert %0', i);
             client(this.table).insert(i).catch((err) => {
             client(this.table).insert(i).catch((err) => {
-                console.log(err);
+                console.log(`data [${JSON.stringify(i)}] error`, err);
             });
             });
         }
         }