Update app.py

app.py

@@ -227,7 +227,10 @@ async def on_message(message):
             
     except Exception as e:
         print(e)
-        return 0
+        embed = discord.Embed(title="ERROR",
+                                      description=e,
+                                      color=0xFF3348)
+        await e.edit(embed=embed)
 
 token = os.environ["TOKEN"]
 client.run(token)