Upload app.py

app.py

@@ -81,7 +81,7 @@ with col1:
     if st.button("Calculate Metrics"):
         metrics = calculate_metrics(question, st.session_state.response, st.session_state.retrieved_documents, st.session_state.time_taken_for_response)
     else:
-        metrics = ""
+        metrics = {}
 
 with col2:
     #st.text_area("Metrics:", value=metrics, height=100, disabled=True)