Update app.py

app.py

@@ -371,6 +371,8 @@ if "text_embeddings" not in dictionary:
 if "rerun" not in dictionary:
     dictionary['rerun']="good"
     st.rerun()
+if "upload_file_name" not in dictionary:
+    dictionary['upload_file_name'] = "no file"
 
 stroke_width = st.sidebar.slider("Stroke width: ", 1, 25, 20)
 if drawing_mode == 'point':