Getting this error ImportError: cannot import name 'DATA KEY' from 'Ilama_index.constants (C:\Users\2772727\venv\Lib\site-packages\llana_index\constants.py)
I am receiving this error when i try to indexing with index = KnowledgeGraphIndex.from_documents( documents, max_triplets_per_chunk=2, storage_context=storage_context, ) how can i fix it