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• 18:20, 26 February 2025 Planetoid talk contribs created page Troubleshooting of Streamlit apps (Created page with " = Troubleshooting of Streamlit Apps: LangChain RAG Integration Issues = I've built a Streamlit application that implements a RAG (Retrieval Augmented Generation) system using LangChain, Pinecone for vector storage, and LLMs (GPT/Claude). The app is experiencing a critical error when attempting to generate responses. I've checked the logs from "Manage App" in Streamlit Cloud and found this error: <pre> KeyError: "Input to ChatPromptTemplate is missing variables {'Sourc...")