В чем может быть ошибка в этом коде?

import discord
from discord.ext import commands
 
import sqlite3
 
bot = commands.Bot(command_prefix = "-")
bot.remove_command('help')
 
conn = sqlite3.connect('server.db')
cursor = conn.cursor()
 
 
@bot.event
async def on_ready():
    await bot.change_presence(status=discord.Status.idle, activity=discord.Game('Author: L1ven'))
    cursor.execute("""CREATE TABLE IF NOT EXISTS users (
        name TEXT,
        id INT,
        cash INT,
        server_id INT
    )""")
 
    cursor.execute("""CREATE TABLE IF NOT EXISTS shop (
        role_id INT,
        id INT,
        cost INT
    )""")
 
    for guild in bot.guilds:
        for member in guild.members:
            if cursor.execute(f"SELECT id FROM users WHERE id = {member.id}").fetchone() is None:
                cursor.execute(f"INSERT INTO users VALUES ('{member}', {member.id}, 0, {guild.id})")
            else:
                pass
 
    conn.commit()
    print('bot ready!')
 
 
@bot.event
async def on_member_join(member):
    if cursor.execute(f"SELECT id FROM users WHERE id = {member.id}").fetchone() is None:
        cursor.execute(f"INSERT INTO users VALUES ('{member}', {member.id}, 0, {member.guild.id})")
        conn.commit()
    else:
        pass
 
 
@bot.command(aliases = ['balance'])
async def __balance(ctx, member: discord.Member = None):
    if member is None:
        await ctx.send(embed = discord.Embed(
            color= 1356633,
            description = f"""Ваш баланс : **{cursor.execute("SELECT cash FROM users WHERE id = {}".format(ctx.author.id)).fetchone()[0]}**"""
        ))

    else:
        await ctx.send(embed = discord.Embed(
            color= 1356633,
            description = f"""**{member}** имеет **{cursor.execute("SELECT cash FROM users WHERE id = {}".format(member.id)).fetchone()[0]}**"""
        ))