Update app.py

app.py

@@ -37,8 +37,11 @@ async def downdb():
     client = TelegramClient(None, api_id, api_hash)
     await client.start(bot_token=bot_token)
     os.remove('instance/database.db')
-    last_message = (await client.get_messages(channel, 1))[0]
-    await fast_download(client,last_message)
+    @client.on(events.NewMessage)
+    async def handler(event):
+        last_message = event.message
+        await fast_download(client,last_message)
+        await client.disconnect()
     
     return '2'
 
@@ -51,6 +54,7 @@ async def updb():
     entity = await client.get_entity(channel)
 
     await client.send_file(entity,fle, force_document=True)   
+    await client.disconnect()
     return '2'
 
 app = Flask("Simplz")