我想通过watchdog观察文件系统的变化，并通过telethon另外发送一条消息，代码如下：

import time
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler
from telethon import TelegramClient, sync, events

api_id = 0000000
api_hash = '*'

client = TelegramClient('Name', api_id, api_hash)
client.start()

class OnMyWatch:
    # Set the directory on watch
    watchDirectory = "/Users/UserID/Desktop/"

    def __init__(self):
        self.observer = Observer()

    def run(self):
        event_handler = Handler()
        self.observer.schedule(event_handler, self.watchDirectory, recursive=True)
        self.observer.start()
        try:
            while True:
                time.sleep(5)
        except:
            self.observer.stop()
            print("Observer Stopped")

        self.observer.join()

class Handler(FileSystemEventHandler):
    @staticmethod
    def on_any_event(event):
        if event.event_type == 'created':
            # Sending a message to myself 
            client.send_message('me', 'A file was created!'),

if __name__ == '__main__':
    watch = OnMyWatch()
    watch.run()

不幸的是，它抛出以下错误：
file“/library/frameworks/python.framework/versions/3.9/lib/python3.9/site packages/telethon/sync.py”，第35行，syncified loop=asyncio.get\u event\u loop（）
file“/library/frameworks/python.framework/versions/3.9/lib/python3.9/asyncio/events.py”，第642行，在get\u event\u loop raise runtimeerror（'线程%r中没有当前事件循环'
runtimeerror:线程“thread-2”中没有当前事件循环*
我试图理解如何使用asyncio和telethon，但无法修复它，所以我想在这里得到一些有价值的提示。