Update app.py

app.py

@@ -7,6 +7,7 @@ from langchain.embeddings import HuggingFaceEmbeddings
 from langchain.vectorstores import FAISS
 from langchain.chains import ConversationalRetrievalChain
 from langchain.memory import ConversationBufferMemory
+from langchain.embeddings import OpenAIEmbeddings
 
 # Simple memory cache
 class MemoryCache:
@@ -75,7 +76,7 @@ class GenAIQASystem:
             texts = text_splitter.split_text(self.content)
             
             # Create vector store
-            embeddings = HuggingFaceEmbeddings(model_name="all-MiniLM-L6-v2")
+            embeddings = OpenAIEmbeddings()
             vectorstore = FAISS.from_texts(texts, embeddings)
             
             # Set up QA chain