TypeError: 'property' object is not iterable

недавно разбил код на Cogs, и в итоге перестала работать часть кода, выдавая ошибку: TypeError: 'property' object is not iterable. Я как только не пытался, помогите пожалуйста, код прикрепляю ниже:

    import discord
    from discord.ext import commands
    from discord.ext.commands import Bot
    from Cybernator import Paginator
    import sqlite3

    class Eco(commands.Cog):
        def __init__(self, Bot):
            self.Bot = Bot

    self.connection = sqlite3.connect('server.db') 
    self.cursor = self.connection.cursor()

@commands.Cog.listener()
async def on_ready(self):
    self.cursor.execute("""CREATE TABLE IF NOT EXISTS users (
        name TEXT,
        id INT,
        cash BIGINT,
        rep INT,
        lvl INT  
    )""")

    self.cursor.execute("""CREATE TABLE IF NOT EXISTS shop (
        role_id INT,
        id INT,
        cost BIGINT
    )""")

    for guild in Bot.guilds:
        for member in guild.members:
            if self.cursor.execute(f"SELECT id FROM users WHERE id = {member.id}").fetchone() is None:
                self.cursor.execute(f"INSERT INTO users VALUES ('{member}', {member.id}, 0, 0, 1)")
                self.connection.commit()
            else:
                pass
    connection.commit()
@commands.Cog.listener()
async def on_member_join(self, member):
    if self.cursor.execute(f"SELECT id FROM users WHERE id = {member.id}").fetchone() is None:
        self.cursor.execute(f"INSERT INTO users VALUES ('{member}', {member.id}, 0, 0, 1)")
        self.connection.commit()
    else:
        pass
@commands.command()
async def balance(self, ctx, member: discord.Member = None):
    if member is None:
        await ctx.send(embed = discord.Embed(
            description = f"""Баланс пользователя **{ctx.author}** составяляет **{self.cursor.execute("SELECT cash FROM users WHERE id = {}".format(ctx.author.id)).fetchone()[0]} :leaves:**"""
            ))
    else:
        await ctx.send(embed = discord.Embed(
            description = f"""Баланс пользователя **{member}** составяляет **{self.cursor.execute("SELECT cash FROM users WHERE id = {}".format(member.id)).fetchone()[0]} :leaves:**"""
            ))

@commands.command()
async def award(self, ctx, member:discord.Member = None, amount: int = None):
    if member is None:
        await ctx.send(embed = discord.Embed(
            description = f"**{ctx.author}**, укажите пользователя, которому желаете выдать сумму"))
    else:
        if amount is None:
            await ctx.send(embed = discord.Embed(
                description = f"**{ctx.author}**, укажите сумму, которую желаете выдать."))
        elif amount < 1:
            await ctx.send(embed = discord.Embed(
                description = f"**{ctx.author}**, укажите сумму больше 1."))
        else:
            self.cursor.execute("UPDATE users SET cash = cash + {} WHERE id = {}".format(amount, member.id))
            self.connection.commit()

            await ctx.message.add_reaction('?')

@commands.command()
async def take(self, ctx, member: discord.Member = None, amount = None):
    if member is None:
        await ctx.send(embed = discord.Embed(
            description = f"**{ctx.author}**, укажите пользователя, которому желаете отнять сумму"))
    else:
        if amount is None:
            await ctx.send(embed = discord.Embed(
                description = f"**{ctx.author}**, укажите сумму, которую желаете убрать."))
        elif amount == 'all':
            self.cursor.execute("UPDATE users SET cash = cash = {} WHERE id = {}".format(0, member.id))
            self.connection.commit()

            await ctx.message.add_reaction('?')
        elif int(amount) < 1:
            await ctx.send(embed = discord.Embed(
                description = f"**{ctx.author}**, укажите сумму больше 1."))
        else:
            self.cursor.execute("UPDATE users SET cash = cash - {} WHERE id = {}".format(int(amount), member.id))
            self.connection.commit()

            await ctx.message.add_reaction('?')

@commands.command(aliases = ['add-shop'])
async def __add_shop(self, ctx, role: discord.Role = None, cost: int = None):
    if role is None:
        await ctx.send(f"**{ctx.author}**, укажите роль, которую вы желаете внести в магазин")
    else:
        if cost is None:
            await ctx.send(f"**{ctx.author}**, укажите стоимость для данной роли")
        elif cost < 0:
            await ctx.send(f"**{ctx.author}**, стоимость роли не может быть такой маленькой")
        else:
            self.cursor.execute("INSERT INTO shop VALUES ({}, {}, {})".format(role.id, ctx.guild.id, cost))
            self.connection.commit()

        await ctx.message.add_reaction('?')


@commands.command(aliases = ['remove-shop'])
async def __remove_shop(self, ctx, role: discord.Role = None):
    if role is None:
        await ctx.send(f"**{ctx.author}**, укажите роль, которую вы желаете удалить из магазина")
    else:
        self.cursor.execute("DELETE FROM shop WHERE role_id = {}".format(role.id))
        self.connection.commit()

        await ctx.message.add_reaction('?')


@commands.command(aliases = ['shop'])
async def __shop(self, ctx):
    embed = discord.Embed(title = 'Магазин ролей')

    for row in self.cursor.execute("SELECT role_id, cost FROM shop WHERE id = {}".format(ctx.guild.id)):
        if ctx.guild.get_role(row[0]) != None:
            embed.add_field(
                name = f"Стоимость **{row[1]} :leaves:**",
                value = f"Вы приобрете роль {ctx.guild.get_role(row[0]).mention}",
                inline = False
            )
        else:
            pass

    await ctx.send(embed = embed)


@commands.command(aliases = ['buy', 'buy-role'])
async def __buy(self, ctx, role: discord.Role = None):
    if role is None:
        await ctx.send(f"**{ctx.author}**, укажите роль, которую вы желаете приобрести")
    else:
        if role in ctx.author.roles:
            await ctx.send(f"**{ctx.author}**, у вас уже имеется данная роль")
        elif self.cursor.execute("SELECT cost FROM shop WHERE role_id = {}".format(role.id)).fetchone()[0] > self.cursor.execute("SELECT cash FROM users WHERE id = {}".format(ctx.author.id)).fetchone()[0]:
            await ctx.send(f"**{ctx.author}**, у вас недостаточно средств для покупки данной роли")
        else:
            await ctx.author.add_roles(role)
            self.cursor.execute("UPDATE users SET cash = cash - {} WHERE id = {}".format(self.cursor.execute("SELECT cost FROM shop WHERE role_id = {}".format(role.id)).fetchone()[0], ctx.author.id))
            connection.commit()

            await ctx.message.add_reaction('?')


@commands.command()
async def trade(self, ctx, member: discord.Member = None, role: discord.Role = None):
    if role is None:
        await ctx.send(embed = discord.Embed(
            description = "Укажите пользователя, которому желаете передать роль"))
    else:
        if member is None:
            await ctx.send(embed = discord.Embed(
                description = "Укажите роль, которую желаете обменять."))
        else:
            if role in member.roles:
                ctx.send(f"**{ctx.author}**, у пользователя имеется уже данная роль.")
            elif role in ctx.author.roles:
                await ctx.author.remove_roles(role)
                await member.add_roles(role)

                await ctx.message.add_reaction('?')

                def setup(Bot):
                    Bot.add_cog(Eco(Bot))