Update app.py

app.py

@@ -1,14 +1,14 @@
 import gradio as gr
-from llama_index import SimpleDirectoryReader, VectorStoreIndex, ServiceContext
-from llama_index.llms import OpenAI
 import os
+from llama_index.core import SimpleDirectoryReader, VectorStoreIndex, ServiceContext
+from llama_index.llms.openai import OpenAI
 
-# Load your OpenAI API key securely
+# Set your OpenAI API key
 os.environ["OPENAI_API_KEY"] = os.getenv("OPENAI_API_KEY")
 
 # Load documents and create index
-docs = SimpleDirectoryReader("documents").load_data()
-index = VectorStoreIndex.from_documents(docs, service_context=ServiceContext.from_defaults(llm=OpenAI()))
+documents = SimpleDirectoryReader("documents").load_data()
+index = VectorStoreIndex.from_documents(documents, service_context=ServiceContext.from_defaults(llm=OpenAI()))
 query_engine = index.as_query_engine()
 
 def chatbot_response(message):