Discord Bot崩溃没有错误

Question

我遇到的问题是此代码将工作四到五分钟，如果文本文件更新，则该消息将显示在discord上。但是，无论是内存耗尽还是出现其他问题，机器人都会停止运行，并且不会再收到消息。

文本文件从源获取输入并随机添加。它也不会留下任何错误信息。

    import discord
    import asyncio
    from discord.ext import commands
    import time


    global count

    bot = commands.Bot(command_prefix="!")

    def get_msg(): #Retrieves the last message from the text file
        global last
        global logs
        logs = open('msg.txt','r')
        msgs = logs.readlines()
        logs.close()
        last = msgs[len(msgs)-1]

    def line_count(): #Retrieves the amount of lines in the text file
        global count
        r = open("msg.txt", 'r')
        j = r.readlines()
        r.close()
        count = 0

        for line in j:

            count += 1
        r.close()
        return count

    async def run(): #checks if the amount of lines has changed, if it has; displays message
        global count

        ct = line_count()
        oc = ct
        await bot.wait_until_ready()

        while True:

            if ct != oc:
                oc = ct
                get_msg()
                prep = "Incoming: " + last
                await bot.send_message(discord.Object('******'),prep)

                oc = ct
            else:
                ct = line_count()




    bot.loop.create_task(run())        
    bot.run('***********')