Python Discord.py命令在随机时间段内突然停止工作

我正试图用我的discord机器人重新创建一个简单的记忆游戏。以下是此命令的代码：

@client.command(aliases = ['em']) # Emoji_Memory, EM
async def emoji_memory(ctx):
    guild = client.get_guild(id)
    board = []
    for h in range(36):
        board.append('⬛')
    emojiListB = os.listdir('emojis')
    emojiList = []
    for f in emojiListB:
        if str(f).endswith('.png'):
            emojiList.append(f)
    pairs = []
    for n in range(18):
        pairs.append(emojiList[random.randint(0, len(emojiList) - 1)])
    sequence = {}
    dList = []
    for d in range(1, 37):
        dList.append(d)
    for p in range(len(pairs)):
        temp1 = random.choice(dList)
        dList.remove(temp1)
        temp2 = random.choice(dList)
        dList.remove(temp2) 
        sequence[str(pairs[p])] = [temp1, temp2]
    tileList = []
    for i in sequence:
        for l in range(len(sequence[i])):
            if sequence[i][l] <= 6:
                sequence[i][l] = 'A' + str(sequence[i][l])
                tileList.append(sequence[i][l])
            elif sequence[i][l] <= 12:
                sequence[i][l] = 'B' + str(sequence[i][l] - (6))
                tileList.append(sequence[i][l])
            elif sequence[i][l] <= 18:
                sequence[i][l] = 'C' + str(sequence[i][l] - (12))
                tileList.append(sequence[i][l])
            elif sequence[i][l] <= 24:
                sequence[i][l] = 'D' + str(sequence[i][l] - (18))
                tileList.append(sequence[i][l])
            elif sequence[i][l] <= 30:
                sequence[i][l] = 'E' + str(sequence[i][l] - (24))
                tileList.append(sequence[i][l])
            elif sequence[i][l] <= 36:
                sequence[i][l] = 'F' + str(sequence[i][l] - (30))
                tileList.append(sequence[i][l])
    moves = 0
    matches = 0
    allMatchesFound = False
    while allMatchesFound != True:
        count = 0
        boardText = ''
        for t in board:
            boardText += t + ' '
            count += 1
            if count == 6:
                boardText += '\n:regional_indicator_b: '
            elif count == 12:
                boardText += '\n:regional_indicator_c: '
            elif count == 18:
                boardText += '\n:regional_indicator_d: '
            elif count == 24:
                boardText += '\n:regional_indicator_e: '
            elif count == 30:
                boardText += '\n:regional_indicator_f: '
        boardMessage = await ctx.send(embed = discord.Embed(title = '__Emoji Match__', description = '⬛ :one: :two: :three: :four: :five: :six:\n:regional_indicator_a: ' + boardText, color = 0xf6dbe9))
        def check(author):
            def inner_check(message):
                return message.author == author and message.content.startswith('d.flip ')
            return inner_check
        try:
            msg = await client.wait_for('message', timeout = 120.0, check = check(ctx.message.author))
        except asyncio.TimeoutError:
            await ctx.send('Time up, game ended, no score recorded.')
            return
        else:
            tileString = str(msg.content)[str(msg.content).find(' ') + 1:]
            tiles = tileString.split()
            try:
                tiles[0] = tiles[0].upper()
            except:
                pass
            try:
                tiles[1] = tiles[1].upper()
            except:
                pass
            if len(tiles) != 2:
                await ctx.send('Invalid number of tiles, try again.')
            elif any([not(tiles[0] in tileList), not(tiles[1] in tileList)]):
                await ctx.send('Invalid tile number, try again.')
            elif tiles[0] == tiles[1]:
                await ctx.send('You cannot flip the same tile twice, try again.')
            else:
                for i in sequence:
                    if tiles[0] in sequence[i]:
                        img = open('emojis/' + i, 'rb').read()
                    if tiles[1] in sequence[i]:
                        img2 = open('emojis/' + i, 'rb').read()
                flipped = await guild.create_custom_emoji(name = 'tile' + tiles[0], image = img)
                flipped2 = await guild.create_custom_emoji(name = 'tile' + tiles[1], image = img2)
                await boardMessage.delete()
                count = 0
                moves += 1
                boardText = ''
                for tile in range(len(tiles)):
                    if 'A' in tiles[tile]:
                        tiles[tile] = int(tiles[tile][1:])
                    elif 'B' in tiles[tile]:
                        tiles[tile] = 6 + int(tiles[tile][1:])
                    elif 'C' in tiles[tile]:
                        tiles[tile] = 12 + int(tiles[tile][1:])
                    elif 'D' in tiles[tile]:
                        tiles[tile] = 18 + int(tiles[tile][1:])
                    elif 'E' in tiles[tile]:
                        tiles[tile] = 24 + int(tiles[tile][1:])
                    elif 'F' in tiles[tile]:
                        tiles[tile] = 30 + int(tiles[tile][1:])
                for t in board:
                    if count + 1 == tiles[0]:
                        boardText += str(flipped) + ' '
                    elif count + 1 == tiles[1]:
                        boardText += str(flipped2) + ' '
                    else:
                        boardText += t + ' '
                    count += 1
                    if count == 6:
                        boardText += '\n:regional_indicator_b: '
                    elif count == 12:
                        boardText += '\n:regional_indicator_c: '
                    elif count == 18:
                        boardText += '\n:regional_indicator_d: '
                    elif count == 24:
                        boardText += '\n:regional_indicator_e: '
                    elif count == 30:
                        boardText += '\n:regional_indicator_f: '
                boardMessage = await ctx.send(embed = discord.Embed(title = '__Emoji Match__', description = '⬛ :one: :two: :three: :four: :five: :six:\n:regional_indicator_a: ' + boardText, color = 0xf6dbe9))
                if str(img) == str(img2):
                    await ctx.send('Match!')
                    matches += 1
                    board[tiles[0] - 1] = '⬜'
                    board[tiles[1] - 1] = '⬜'
                if matches == 18:
                    await ctx.send('All matches found!')
                    allMatchesFound = True
                await flipped.delete()
                await flipped2.delete()
                await asyncio.sleep(3)
                await boardMessage.delete()

@client.command（别名=['em']）#表情记忆，em
异步def表情记忆（ctx）：
帮会=客户。获取帮会（id）
董事会=[]
对于范围（36）内的h：
董事会⬛')
emojiListB=os.listdir（'emojis'）
表情列表=[]
对于emojiListB中的f：
如果str（f）.endswith（'.png'）：
emojiList.append（f）
成对=[]
对于范围（18）内的n：
pairs.append（emojiList[random.randint（0，len（emojiList）-1）]）
序列={}
dList=[]
对于范围（1,37）内的d：
dList.append（d）
对于范围内的p（len（pairs））：
temp1=随机选择（dList）
数据列表。删除（临时1）
temp2=随机选择（dList）
数据列表。删除（临时2）
序列[str（pairs[p]）]=[temp1，temp2]
tileList=[]
对于顺序中的i：
对于范围内的l（len（序列[i]）：
if序列[i][l]