--

card_base.cpp

@@ -57,6 +57,11 @@ void card_location_base::on_message(zloop<task*> * loop,const message_locinfo&lo
 	m_time = loc.m_time_stamp;
 	auto site_ptr = sit_list::instance()->get(loc.m_site_id);
 
+	if(!site_ptr)
+	{
+		return;
+	}
+
 	if(site_ptr->is_up_site())
 	{
 		auto area_tool=get_area_tool();