playwright and httpx coroutine conflicts，How to solve it？

Question

I created a BaseSpider class that needs to use playwright and httpx, but in the case of coroutines, they conflict. code:

class BaseSpider():
    def __init__(self) :

        self.play_wright = sync_playwright().start()
    
    async def req(self, client: AsyncClient, i):
        res = await client.get('https://www.baidu.com')
        print(f'{i + 1}，status_code = {res.status_code}')
        return res
    
    async def main(self):
        async with httpx.AsyncClient() as client:
            response = await client.get('https://www.baidu.com')
            print(response)

if __name__ == '__main__':
   base = BaseSpider()
   asyncio.run(base.main())

run error:asyncio.run() cannot be called from a running event loop

I comment # self.play_wright = sync_playwright().start().They're ready to work.

How to get Playwright and HTTPX to run together in coroutines？

Thank you for your help！