diff --git a/src/MaaCore/Task/Interface/SingleStepTask.cpp b/src/MaaCore/Task/Interface/SingleStepTask.cpp
index 70a515df3b..d6ae5628a3 100644
--- a/src/MaaCore/Task/Interface/SingleStepTask.cpp
+++ b/src/MaaCore/Task/Interface/SingleStepTask.cpp
@@ -2,6 +2,7 @@
 
 #include "../SingleStep/SingleStepBattleProcessTask.h"
 #include "Config/Miscellaneous/CopilotConfig.h"
+#include "Utils/Logger.hpp"
 
 asst::SingleStepTask::SingleStepTask(const AsstCallback& callback, Assistant* inst)
     : InterfaceTask(callback, inst, TaskType)
@@ -9,14 +10,28 @@ asst::SingleStepTask::SingleStepTask(const AsstCallback& callback, Assistant* in
 
 bool asst::SingleStepTask::set_params(const json::value& params)
 {
-    std::string type = params.at("type").as_string();
-    std::string subtype = params.at("subtype").as_string();
-    const json::value& details = params.at("details");
+    std::string type = params.get("type", "");
+    std::string subtype = params.get("subtype", "");
+    auto details_opt = params.find("details");
 
-    if (type == "copilot" && subtype == "action") {
+    if (type == "copilot" && subtype == "action" && details_opt) {
         auto task = std::make_shared<SingleStepBattleProcessTask>(m_callback, m_inst, TaskType);
+        // for debug
+        task->set_stage_name("OF-1");
+
         // 请参考自动战斗协议
-        task->set_actions(CopilotConfig::parse_actions(details));
+        try {
+            task->set_actions(CopilotConfig::parse_actions(*details_opt));
+        }
+        catch (const json::exception& e) {
+            Log.error(__FUNCTION__, e.what());
+            return false;
+        }
+        catch (const std::exception& e) {
+            Log.error(__FUNCTION__, e.what());
+            return false;
+        }
+
         m_subtasks.emplace_back(std::move(task));
 
         return true;