run lpbq demo Qwen2.5-0.5B-Instruct convert qnn cpp crash

[guxiangtao]

python3 -m Examples.onnx.quantize --model-id /model/Qwen2.5-0.5B-Instruct --recipe "lpbq_seqmse" --export-path "./onnx_lpbq" --seqmse-num-batches 1 --calib-num-batches 1
${QNN_SDK_ROOT}/bin/x86_64-linux-clang/qnn-onnx-converter --input_network onnx_lpbq/model_cl4096.onnx --quantization_overrides onnx_lpbq/model_cl4096.encodings --input_list raw/input_list.txt

part log：
the flag --use_dynamic_16_bit weights to honour the override.
442939.0ms [ INFO ] Freeing graphsInfo
442939.1ms [WARNING] Profile Logger with name = defaultKey doesn't exist! Returning nullptr
442956.8ms [ INFO ] [QNN_CPU] QnnContext Free start
443688.2ms [ INFO ] [QNN_CPU] QnnContext Free end
443671.4ms [WARNING] Profile Logger with name = defaultKey doesn't exist!
443689.1ms [ INFO ] [QNN_CPU] QnnBackend Free start
443689.3ms [ INFO ] [QNN_CPU] QnnBackend Free end
2026-04-14 08:33:15,453 - 278 - INFO - Saving QNN Model...
2026-04-14 08:33:16,216 - 273 - ERROR - Encountered Error: map::at: key not found
Traceback (most recent call last):
File "qnn_sdk_v2.42.0_auto_lnx/bin/x86_64-linux-clang/qnn-onnx-converter", line 80, in main
backend.save(optimized_graph)
File "qnn_sdk_v2.42.0_auto_lnx/lib/python/qti/aisw/converters/backend/ir_to_qnn.py", line 705, in save
self.save_to_cpp(ir_graph)
File "qnn_sdk_v2.42.0_auto_lnx/lib/python/qti/aisw/converters/backend/ir_to_qnn.py", line 614, in save_to_cpp
raise e
File "qnn_sdk_v2.42.0_auto_lnx/lib/python/qti/aisw/converters/backend/ir_to_qnn.py", line 579, in save_to_cpp
self.model.serialize(ir_graph, self)
IndexError: map::at: key not found