Update app.py

app.py

@@ -100,7 +100,7 @@ timestamp_gpu_data = [[0 for _ in range(len(name_list))]]
 timestamp_inference_data = [sample_data['chain'][0]['timestamp']]
 for block in sample_data['chain']:
     temp = timestamp_gpu_data[int(block['index']) - 1]
-    if strftime('%Y-%m-%d', localtime( timestamp_list_date[-1] )) != strftime('%Y-%m-%d', localtime( block['timestamp'] )):
+    if str(strftime('%Y-%m-%d', localtime( timestamp_list_date[-1] ))) != str(strftime('%Y-%m-%d', localtime( block['timestamp'] ))):
         timestamp_list_date.append(block['timestamp'])
         timestamp_inference_data.append(0)