diff --git a/plugins/ai_face_recog/ai_face_recog_node.cpp b/plugins/ai_face_recog/ai_face_recog_node.cpp
index a12545e..6b6a097 100644
--- a/plugins/ai_face_recog/ai_face_recog_node.cpp
+++ b/plugins/ai_face_recog/ai_face_recog_node.cpp
@@ -897,7 +897,9 @@ private:
                 in.type = RKNN_TENSOR_UINT8;
             }
 
+            std::cerr << "[ai_face_recog] DEBUG: before InferBorrowed, in.size=" << in.size << " in.type=" << in.type << "\n";
             auto r = AiScheduler::Instance().InferBorrowed(model_handle_, in);
+            std::cerr << "[ai_face_recog] DEBUG: after InferBorrowed, success=" << r.success << "\n";
             if (!r.success || r.outputs.empty()) {
                 std::cerr << "[ai_face_recog] inference failed: " << (r.error.empty() ? "unknown" : r.error) << "\n";
                 continue;