NEED HELP!!!!
ImportError: cannot import name 'BaseQueryEngine' from partially initialized module 'llama_index.core' (most likely due to a circular import) getting it for importing get_tokenizer from utils and also for TokenCountingHandler from llama_index.core.callbacks

I am tracing events using llama-index callbacks, I see there is a call back called chunking being made after synthesize. I do not know why chunking is happening at this stage given the documents have already been stored into the VEctor store. I though this might be due to nodepostprocessor but turns out that's not the source of chunking happening here. Any idea what might be happening?