**Description:**
Fixes to rag-semi-structured template.
- Added required libraries
- pdfminer was causing issues when installing with pip. pdfminer.six
works best
- Changed the pdf name for demo from llama2 to llava
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Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
Co-authored-by: Lance Martin <lance@langchain.dev>
Co-authored-by: Jacob Lee <jacoblee93@gmail.com>
