Update requirements.txt

requirements.txt

@@ -1,12 +1,12 @@
 huggingface-hub>=0.23.0 
-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 # 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==0.3.0 # LLaMA integration with Langchain
-pydantic==2.5.2 
+langchain==0.0.208  # Version compatible with pydantic <2
+langchain-core==0.1.0  # Downgrade to a version that supports pydantic 1.x
+langchain-huggingface==0.0.4  # Compatible with this version of langchain-core
+gradio==3.41.2
+datasets==2.15.1
+pandas==2.1.1
+sentence-transformers==2.2.2
+chromadb==0.4.2
+nltk==3.8.1
+ollama
+pydantic==1.10.12  # Aligned with langchain