I'm getting this error"[ERROR] IndexError: list index out of range Traceback (most recent call last): File "/var/task/app.py", line 85, in handler index = GPTSimpleVectorIndex(documents, chunk_size_limit=256) File "/var/lang/lib/python3.8/site-packages/gpt_index/indices/vector_store/simple.py", line 48, in init super().init( File "/var/lang/lib/python3.8/site-packages/gpt_index/indices/vector_store/base.py", line 43, in init super().init( File "/var/lang/lib/python3.8/site-packages/gpt_index/indices/base.py", line 96, in init self._index_struct = self.build_index_from_documents( File "/var/lang/lib/python3.8/site-packages/gpt_index/token_counter/token_counter.py", line 54, in wrapped_llm_predict f_return_val = f(_self, *args, **kwargs) File "/var/lang/lib/python3.8/site-packages/gpt_index/indices/base.py", line 231, in build_index_from_documents return self._build_index_from_documents(documents, verbose=verbose) File "/var/lang/lib/python3.8/site-packages/gpt_index/indices/vector_store/base.py", line 74, in _build_index_from_documents self._add_document_to_index(index_struct, d, text_splitter) File "/var/lang/lib/python3.8/site-packages/gpt_index/indices/vector_store/simple.py", line 64, in _add_document_to_index nodes = self._get_nodes_from_document(document, text_splitter) File "/var/lang/lib/python3.8/site-packages/gpt_index/indices/base.py", line 197, in _get_nodes_from_document text_chunks = text_splitter.split_text(document.get_text()) File "/var/lang/lib/python3.8/site-packages/gpt_index/langchain_helpers/text_splitter.py", line 128, in split_text cur_num_tokens = max(len(self.tokenizer(splits[start_idx])), 1) " when parsing large PDF datasheets with small chunk sizes
