Update app.py

app.py

@@ -80,6 +80,9 @@ if submitted:
             pass
 
     if selected_df is None:
+        st.success('Feature vector failed. Check log file.')
+
+    else:
         if len(selected_df) != 0 :
             st.success('Feature vector successfully created.')
             csv = convert_df(selected_df)
@@ -88,8 +91,7 @@ if submitted:
 
         else:
             st.success('Feature vector failed. Check log file.')
-    else:
-        st.success('Feature vector failed. Check log file.')
+