Update app.py

app.py

@@ -61,7 +61,7 @@ def promptgen(choice, num, artist):
         elif not prompt[rand-1].startswith('art by'):
             generated.append(prompt[rand-1])
       print(', '.join(set(generated)) + '\n')
-      f.write(f"{ctime(t)} - {', '.join(set(generated))}")
+      f.write(f"{str(ctime(t))} - {', '.join(set(generated))}")
       return ', '.join(set(generated))
 
 demo = gr.Blocks()