知识抽取出现问题了，怎么解决

Traceback (most recent call last): File "/mnt/SSD/home/zxy24/KAG/kag/builder/prompt/default/util.py", line 180, in check_data info = json.loads( File "/mnt/SSD/home/zxy24/anaconda3/envs/openspg/lib/python3.10/json/init.py", line 346, in loads return _default_decoder.decode(s) File "/mnt/SSD/home/zxy24/anaconda3/envs/openspg/lib/python3.10/json/decoder.py", line 337, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/mnt/SSD/home/zxy24/anaconda3/envs/openspg/lib/python3.10/json/decoder.py", line 355, in raw_decode raise JSONDecodeError("Expecting value", s, err.value) from None json.decoder.JSONDecodeError: Expecting value: line 1 column 2 (char 1) 2025-10-16 21:34:50 - ERROR - root - Failed to process data {'id': 'Alû', 'name': 'Alû', 'content': 'In Akkadia'}, info: Traceback (most recent call last): File "/mnt/SSD/home/zxy24/KAG/kag/builder/runner.py", line 207, in process result = await self.chain.ainvoke(data) File "/mnt/SSD/home/zxy24/KAG/kag/interface/builder/builder_chain_abc.py", line 164, in ainvoke outputs = await asyncio.gather(*tasks) File "/mnt/SSD/home/zxy24/KAG/kag/interface/builder/builder_chain_abc.py", line 134, in execute_node results = await asyncio.gather(*tasks) File "/mnt/SSD/home/zxy24/KAG/kag/interface/builder/builder_chain_abc.py", line 126, in ainvoke_with_semaphore return await node.ainvoke(item) File "/mnt/SSD/home/zxy24/KAG/kag/interface/builder/base.py", line 215, in ainvoke output = await self._ainvoke(input_data, **kwargs) File "/mnt/SSD/home/zxy24/KAG/kag/builder/component/extractor/knowledge_unit_extractor.py", line 671, in _ainvoke knowledge_unit_nodes = self.assemble_knowledge_unit( File "/mnt/SSD/home/zxy24/KAG/kag/builder/component/extractor/knowledge_unit_extractor.py", line 587, in assemble_knowledge_unit for item in knowledge_value.get("core_entities", "").split(","): AttributeError: 'dict' object has no attribute 'split' 100%|██████████████████████████████████████████████████| 8/8 [02:57<00:00, 22.23s/it] Done process 8 records, with 0 found in checkpoint, 0 successfully processed and 8 failures encountered. The log file is located at ckpt/kag_checkpoint_0_1.ckpt. Please access this file to obtain detailed task statistics. 2025-10-16 21:34:50 - INFO - main -

buildKB successfully for /mnt/SSD/home/zxy24/KAG/kag/examples/HotpotQATest/builder/data/sub_corpus.json