Update app.py

app.py

@@ -34,7 +34,10 @@ def extract_text_from_pdf(pdf_stream):
 def create_vector_db(text_chunks):
     """Embeds text chunks and adds them to FAISS index"""
     global documents, index
-
+    
+    # Reinitialize the FAISS index
+    index = faiss.IndexFlatL2(vector_dim)
+    
     documents = text_chunks
     embeddings = embed_model.encode(text_chunks)