From df2a04fc4e8f7b5cba31b53a6364a83a69e418c1 Mon Sep 17 00:00:00 2001
From: Edanflame <237397488@qq.com>
Date: Wed, 17 Nov 2021 16:29:38 +0800
Subject: [PATCH] =?UTF-8?q?[Fix]=20=E5=A2=9E=E5=8A=A0=E9=94=99=E8=AF=AF?=
 =?UTF-8?q?=E8=BF=94=E5=9B=9E?=
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---
 vnpy_tushare/tushare_datafeed.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/vnpy_tushare/tushare_datafeed.py b/vnpy_tushare/tushare_datafeed.py
index 1e413ba..21e029c 100644
--- a/vnpy_tushare/tushare_datafeed.py
+++ b/vnpy_tushare/tushare_datafeed.py
@@ -143,7 +143,12 @@ def query_bar_history(self, req: HistoryRequest) -> Optional[List[BarData]]:
         end = req.end.strftime("%Y%m%d")
 
         ts_symbol = to_ts_symbol(symbol, exchange)
+        if not ts_symbol:
+            return None
+
         asset = to_ts_asset(symbol, exchange)
+        if not asset:
+            return None
 
         ts_interval = INTERVAL_VT2TS.get(interval)
         if not ts_interval: