Hi That is nicely written guides. I have a question: For below codes;
from llama_index import VectorStoreIndex, SimpleDirectoryReader
#Load documents from a directory documents = SimpleDirectoryReader('book').load_data()
#Create an index from the documents index=VectorStoreIndex.from_documents(documents)
i have an exception thrown at this line:VectorStoreIndex.from_documents(..)
No API key found for OpenAI. Please set either the OPENAI_API_KEY environment variable or openai.api_key prior to initialization. API keys can be found or created at .....
I am just testing the indexing, and i am not using openai. Why was there an openai exception when the app is executing this line: VectorStoreIndex.from_documents(documents)?