``` from weaviate.classes.config import Property, DataType, Configure, Tokenization vdb_client.collections.create( name="episodic_memory", description="Collection containing historical chat interactions and takeaways.", vectorizer_config=[ Configure.NamedVectors.text2vec_ollama( name="title_vector", source_properties=["title"], api_endpoint="http://host.docker.internal:11434", # If using Docker, use this to contact your local Ollama instance model="nomic-embed-text", ) ], properties=[ Property(name="conversation", data_type=DataType.TEXT), Property(name="context_tags", data_type=DataType.TEXT_ARRAY), Property(name="conversation_summary", data_type=DataType.TEXT), Property(name="what_worked", data_type=DataType.TEXT), Property(name="what_to_avoid", data_type=DataType.TEXT), ] ) ``` why you set source_properties=["title"] when there is no such property?
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