添加无错误msg的时候的默认提示

src/api/index.ts

@@ -45,7 +45,7 @@ const createFetch = (basePath: string) => {
         throw data;
       }
       Taro.showToast({
-        title: data.msg,
+        title: data.msg || '网络错误',
         icon: 'none',
       });
       throw data;