Python 如何在discord.py中的on_ready事件中向成员添加角色？

我一直在尝试在on_ready命令中添加角色

@client.event
async def on_ready():
  with open('roles.json','r') as f:
      rolesjson = json.load(f)
  game = discord.Game(name=",help")
  await client.change_presence(status=discord.Status.idle, activity=game)
  print('Logged in!')
  for m in client.get_all_members():
    if f'{m.id}' in rolesjson:
      if rolesjson[f'{m.id}']['time'] != 0:
          await asyncio.sleep(rolesjson[f'{m.id}']['time'])
          RemoveRole = discord.utils.get(m.guild.roles, name='Silenced')
          await m.remove_roles(RemoveRole)
          # roless = [discord.utils.get(m.guild.roles, name=n) for n in rolesjson[f'{m.id}']['roles'] if 
          n != '@everyone']
          # await m.add_roles(*roless)
          rolesjson[f'{m.id}']['time'] = 0

  with open('roles.json','w') as f:
      json.dump(rolesjson,f)

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但这并没有完全消除这个角色。我也没有得到任何类型的错误。那么，如何删除on_ready事件中的角色？

请显示错误