Update requirements.txt

requirements.txt

@@ -1,11 +1,12 @@
 huggingface_hub==0.22.2
-langchain
-langchain-community
-gradio
-datasets
-pandas
-sentence-transformers
-chromadb
-nltk
-ollama
-langchain-huggingface
+langchain==0.0.208  # Core Langchain library
+langchain-core==0.3.0  # Compatible with langchain-huggingface
+langchain-huggingface==0.1.0  # Latest version to avoid conflicts
+gradio==3.41.2  # Chatbot UI framework
+datasets==2.15.1  # Dataset loading library
+pandas==2.1.1  # Data handling
+sentence-transformers==2.2.2  # For embeddings
+chromadb==0.4.2  # Vector store for document embeddings
+nltk==3.8.1  # Text processing
+ollama==0.0.2  # LLaMA integration with Langchain
+huggingface-hub>=0.23.0  # Latest version to satisfy gradio, sentence-transformers, and langchain-huggingface