Discord bot does not change nickname, how to solve the problem?

Question

Bots

I'm trying to implement the function of changing the nickname, through the bot in the discord.
When I try to change the name through the bot, an error appears in the console, swears at the rights.
I checked the rights of the bot, everything is set.
Just in case, in the guild I set the bot a role with all rights.

Bug from concholi

(node:3864) UnhandledPromiseRejectionWarning: DiscordAPIError: Missing Permissions
at D:\OpenServer\OSPanel\domains\AstraBot\node_modules\discord.js\src\client\rest\RequestHandlers\Sequential.js:85:15
at D:\OpenServer\OSPanel\domains\AstraBot\node_modules\snekfetch\src\index.js:215:21
at processTicksAndRejections (internal/process/task_queues.js:97:5)
(node:3864) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_reje... (rejection id: 2)
(node:3864) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

spoiler

if (msg.content == '333') {
            msg.guild.members.get(msg.author.id).setNickname("Шашлык")
        }

Bot rights

Answer 1

Are you trying to change your nickname through a bot and you are the owner of the server? A bot with no rights can in any way edit your profile, because in any case you are higher than it

Answer 2

@client.command(pass_context=True)
async def chnick(ctx, member: discord.Member, nick):
    await member.edit(nick=nick)
    await ctx.send(f'Nickname was changed for {member.mention} ')

Put the bot's role above those it should have access to in the list of roles and the bot can't change owner nicknames