Update app.py

app.py

@@ -91,6 +91,7 @@ for block in sample_data['chain']:
             if not t['id'] in name_list:
                 name_list.append(t['id'])
 
+timestamp_list = timestamp_list[1:-1]
 timestamp_gpu_data = [[0 for _ in range(len(name_list))]]
 for block in sample_data['chain']:
     temp = timestamp_gpu_data[int(block['index']) - 1]