diff --git a/rtc_plugins.cpp b/rtc_plugins.cpp
index 8673ec6..b970700 100644
--- a/rtc_plugins.cpp
+++ b/rtc_plugins.cpp
@@ -33,11 +33,13 @@ int initSend(const char* destRoomId, const int16_t destChannelIndex) {
 }
 int sendCustomAudioData(const int16_t destChannelIndex, py::object pyData, int32_t sampleRate, uint64_t channelNum,
                         uint64_t dataLen) {
+    std::cout << "step1" << std::endl;
     // 检查是否为 numpy 数组
     if (!PyArray_Check(pyData.ptr())) {
         PyErr_SetString(PyExc_TypeError, "Expected a numpy array");
         throw py::error_already_set();
     }
+    std::cout << "step2" << std::endl;
 
     // 检查数据类型是否为 int16
     PyArrayObject* npArray = (PyArrayObject*)pyData.ptr();
@@ -45,12 +47,20 @@ int sendCustomAudioData(const int16_t destChannelIndex, py::object pyData, int32
         PyErr_SetString(PyExc_TypeError, "Array must be of type int16 (np.int16)");
         throw py::error_already_set();
     }
+    std::cout << "step3" << std::endl;
+    if (npArray == nullptr) {
+        std::cout << "npArray is null" << std::endl;
+        PyErr_SetString(PyExc_TypeError, "npArray is null");
+        throw py::error_already_set();
+    }
 
+    std::cout << "step4" << std::endl;
     void* dataPtr = PyArray_DATA(npArray);
     if (dataPtr == nullptr) {
         PyErr_SetString(PyExc_ValueError, "Invalid data pointer");
         throw py::error_already_set();
     }
+    std::cout << "step5" << std::endl;
     return RTCContext::instance().sendCustomAudioData(destChannelIndex, dataPtr, sampleRate, channelNum, dataLen);
 }