Update app.py

app.py

@@ -3,7 +3,8 @@ from langchain.chains.question_answering import load_qa_chain
 from langchain.memory import ConversationBufferMemory
 from langchain.memory import ConversationTokenBufferMemory
 from langchain.llms import HuggingFacePipeline
-from langchain import PromptTemplate
+# from langchain import PromptTemplate
+from langchain.prompts import PromptTemplate 
 from langchain.embeddings import HuggingFaceEmbeddings
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain.callbacks.streaming_stdout import StreamingStdOutCallbackHandler