how do i can fixt this problem of indented block?

Hello this code not work need help i whant re-sent a especific menssage

@events.register(events.NewMessage(chats='AAAAA'))
async def me_handler(event):
  client = event.client
if 'AAAAAAAA' in event.raw_text:
 async def main(event):
 await event.forward_to('AAAAA')

expected an indented block

source https://stackoverflow.com/questions/72748989/how-do-i-can-fixt-this-problem-of-indented-block