Discord.py tracking retaliation role

[simrah]

Bot has to check the role of the responder, but somehow he only trigs his messages and works normally, but when a living man pushes the reaction, he makes such a mistake:

Ignoring exception in on_raw_reaction_add
Traceback (most recent call last):
  File "C:\Users\User\PycharmProjects\pybot\venv\lib\site-packages\discord\client.py", line 343, in _run_event
    await coro(*args, **kwargs)
  File "C:\Users\User\PycharmProjects\pybot\main.py", line 38, in on_raw_reaction_add
    add_role = discord.utils.get(member.guild.roles, id=906203003479015484)
AttributeError: 'NoneType' object has no attribute 'guild'

How can you fix that? Code:

@bot.event
async def on_raw_reaction_add(payload):
    message_id = payload.message_id
    channel_id = payload.channel_id
    channel = bot.get_channel(channel_id)
    message = await channel.fetch_message(message_id)
    user_id = payload.user_id
    member = channel.guild.get_member(user_id)
    add_role = discord.utils.get(member.guild.roles, id=906203003479015484)
    for role in member.roles:
        if role.name != 'admin':
            await member.add_roles(add_role)

[jeanid]

member = discord.utils.get(channel.guild.members, id=user_id)
add_role = discord.utils.get(member.guild.roles, id=906203003479015484)
for role in member.roles:
    if role.name != 'admin':
        await member.add_roles(add_role)