added logging to the top of app.py

app.py

@@ -45,6 +45,12 @@ from prompt import template
 
 set_verbose(True)
 
+
+# set up logging for the chain
+logging.basicConfig()
+logging.getLogger("langchain.retrievers").setLevel(logging.INFO)    
+logging.getLogger("langchain.chains.qa_with_sources").setLevel(logging.INFO)    
+
 # load .env variables
 config = load_dotenv(".env")
 HUGGINGFACEHUB_API_TOKEN=os.getenv('HUGGINGFACEHUB_API_TOKEN')
@@ -104,12 +110,6 @@ prompt = PromptTemplate(
 )
 memory = ConversationBufferMemory(memory_key="history", input_key="question")
 
-# logging for the chain
-logging.basicConfig()
-logging.getLogger("langchain.retrievers").setLevel(logging.INFO)    
-logging.getLogger("langchain.chains.qa_with_sources").setLevel(logging.INFO)    
-
-
 
 
 qa = RetrievalQAWithSourcesChain.from_chain_type(llm=llm, retriever=retriever, return_source_documents=True, verbose=True, chain_type_kwargs={