diff --git a/ext_components/StackFlow/stackflow/StackFlowUtil.cpp b/ext_components/StackFlow/stackflow/StackFlowUtil.cpp
index e83504f..b0bc14c 100644
--- a/ext_components/StackFlow/stackflow/StackFlowUtil.cpp
+++ b/ext_components/StackFlow/stackflow/StackFlowUtil.cpp
@@ -386,14 +386,20 @@ static int base64_decode(const char *in, unsigned int inlen, unsigned char *out)
 
 int StackFlows::decode_base64(const std::string &in, std::string &out)
 {
-    out.resize(BASE64_DECODE_OUT_SIZE(in.length()));
-    return base64_decode((const char *)in.c_str(), in.length(), (unsigned char *)out.data());
+    int out_size = BASE64_DECODE_OUT_SIZE(in.length());
+    out.resize(out_size);
+    int ret = base64_decode((const char *)in.c_str(), in.length(), (unsigned char *)out.data());
+    if ((ret > 0) && (ret != out_size)) out.erase(ret);
+    return ret;
 }
 
 int StackFlows::encode_base64(const std::string &in, std::string &out)
 {
-    out.resize(BASE64_ENCODE_OUT_SIZE(in.length()));
-    return base64_encode((const unsigned char *)in.c_str(), in.length(), (char *)out.data());
+    int out_size = BASE64_ENCODE_OUT_SIZE(in.length());
+    out.resize(out_size);
+    int ret = base64_encode((const unsigned char *)in.c_str(), in.length(), (char *)out.data());
+    if ((ret > 0) && (ret != out_size)) out.erase(ret);
+    return ret;
 }
 
 std::string StackFlows::unit_call(const std::string &unit_name, const std::string &unit_action, const std::string &data)
diff --git a/ext_components/StackFlow/stackflow/pzmq.hpp b/ext_components/StackFlow/stackflow/pzmq.hpp
index ca02852..1942109 100644
--- a/ext_components/StackFlow/stackflow/pzmq.hpp
+++ b/ext_components/StackFlow/stackflow/pzmq.hpp
@@ -348,9 +348,9 @@ public:
         if (!zmq_socket_) {
             return;
         }
+        flage_ = true;
+        zmq_ctx_shutdown(zmq_ctx_);
         if (zmq_thread_) {
-            flage_ = true;
-            zmq_ctx_shutdown(zmq_ctx_);
             zmq_thread_->join();
         }
         close_zmq();
diff --git a/projects/llm_framework/main_sys/src/event_loop.cpp b/projects/llm_framework/main_sys/src/event_loop.cpp
index af1d22d..5fba679 100644
--- a/projects/llm_framework/main_sys/src/event_loop.cpp
+++ b/projects/llm_framework/main_sys/src/event_loop.cpp
@@ -519,21 +519,21 @@ void unit_action_match(int com_id, const std::string &json_str)
     std::string request_id;
     error = doc["request_id"].get_string(request_id);
     if (error) {
-        SLOGE("miss request_id");
+        SLOGE("miss request_id, error:%s", simdjson::error_message(error));
         usr_print_error("0", "sys", "{\"code\":-2, \"message\":\"json format error\"}", com_id);
         return;
     }
     std::string work_id;
     error = doc["work_id"].get_string(work_id);
     if (error) {
-        SLOGE("miss work_id");
+        SLOGE("miss work_id, error:%s", simdjson::error_message(error));
         usr_print_error("0", "sys", "{\"code\":-2, \"message\":\"json format error\"}", com_id);
         return;
     }
     std::string action;
     error = doc["action"].get_string(action);
     if (error) {
-        SLOGE("miss action");
+        SLOGE("miss action, error:%s", simdjson::error_message(error));
         usr_print_error("0", "sys", "{\"code\":-2, \"message\":\"json format error\"}", com_id);
         return;
     }
diff --git a/projects/llm_framework/main_sys/src/zmq_bus.cpp b/projects/llm_framework/main_sys/src/zmq_bus.cpp
index e863623..e60e5a1 100644
--- a/projects/llm_framework/main_sys/src/zmq_bus.cpp
+++ b/projects/llm_framework/main_sys/src/zmq_bus.cpp
@@ -77,6 +77,7 @@ void zmq_bus_com::on_raw_data(const std::string &data)
     memcpy((void *)new_data.data(), json_str_.c_str(), json_str_.length());
     sprintf((char *)(new_data.data() + json_str_.length() - 1), ",\"data\":\"");
     memcpy((void *)(new_data.data() + json_str_.length() + 8), base64_data.c_str(), base64_data.length());
+    new_data[json_str_.length() + 8 + base64_data.length()] = '"';
     new_data[json_str_.length() + 9 + base64_data.length()] = '}';
     on_data(new_data);
 }
diff --git a/projects/llm_framework/main_yolo/src/EngineWrapper.cpp b/projects/llm_framework/main_yolo/src/EngineWrapper.cpp
index 286c6ae..592d74e 100644
--- a/projects/llm_framework/main_yolo/src/EngineWrapper.cpp
+++ b/projects/llm_framework/main_yolo/src/EngineWrapper.cpp
@@ -324,7 +324,7 @@ void post_process(AX_ENGINE_IO_INFO_T* io_info, AX_ENGINE_IO_T* io_data, const c
                                                         cls_num);
         }
         detection::get_out_bbox(proposals, objects, nms_threshold, input_h, input_w, mat.rows, mat.cols);
-        detection::draw_objects(mat, objects, CLASS_NAMES, "yolo11_out");
+        // detection::draw_objects(mat, objects, CLASS_NAMES, "yolo11_out");
     } else if (model_type == "segment") {
         float* output_ptr[3]     = {(float*)io_data->pOutputs[0].pVirAddr, (float*)io_data->pOutputs[1].pVirAddr,
                                     (float*)io_data->pOutputs[2].pVirAddr};
diff --git a/projects/llm_framework/main_yolo/src/main.cpp b/projects/llm_framework/main_yolo/src/main.cpp
index 56738b2..de9e01b 100644
--- a/projects/llm_framework/main_yolo/src/main.cpp
+++ b/projects/llm_framework/main_yolo/src/main.cpp
@@ -275,7 +275,7 @@ public:
             if (finish) count = 0;
             llm_channel->send(llm_task_obj->response_format_, data_body, LLM_NO_ERROR);
         } else if (finish) {
-            SLOGI("send utf-8");
+            // SLOGI("send utf-8");
             llm_channel->send(llm_task_obj->response_format_, data, LLM_NO_ERROR);
         }
     }