Why is the discord bot not talking?

Question

The discord bot is not answering back when I said !hello. It does not respond. What is the issue?

import discord
import os

client = discord.Client()


@client.event
async def on_ready():
  print('We have loggin in as {0.user}'.format(client))

@client.event
async def on_message(message):
  if message.author == client.user:
   return

   if message.conetnt.startswith('!hello'):
     await message.channel.send('Hello!')

client.run(os.getenv('TOKEN'))