Hi I use document summary index as follws: doc_summary_index = DocumentSummaryIndex( nodes=nodes, service_context=service_context, storage_context=storage_context, response_synthesizer=response_synthesizer, show_progress=True, ) But got error: Exception has occurred: ValueError One of nodes, objects, or index_struct must be provided. File "/home/csgrad/yhu/projs/SLPChatbot/docSummaryIndex.py", line 156, in getDocumentIndex index_store=SimpleIndexStore.from_persist_dir(persist_dir=persistent_path) FileNotFoundError: [Errno 2] No such file or directory: '/home/csgrad/yhu/projs/SLPChatbot/documentSumStore/index_storage/slp_doc_sum/index_store.json'
During handling of the above exception, another exception occurred:
File "/home/csgrad/yhu/projs/SLPChatbot/docSummaryIndex.py", line 168, in getDocumentIndex doc_summary_index = DocumentSummaryIndex( File "/home/csgrad/yhu/projs/SLPChatbot/docSummaryIndex.py", line 183, in <module> doc_summary_index = getDocumentIndex(data_path, persistent_path) ValueError: One of nodes, objects, or index_struct must be provided.
