Second language page is not opening

Hello,

Yes I can reproduced. The page is redirected from https://www.sunsetparkradiology.com/zh/%e9%a6%96%e9%a0%81/ to https://www.sunsetparkradiology.com/zh/%e9%a6%96%e9%a0%81/?/ then to https://www.sunsetparkradiology.com/zh/%e9%a6%96%e9%a0%81/?/?/ and so on.
This redirect is not made by Polylang. I know that because we identify redirects with “X-Redirected-By: Polylang” in response header, when your site sends “X-Redirected-By: WordPress” (this means it could come from WordPress or any theme, plugin as this value is the default value when doing redirects in WordPress).
I invite you to deactivate all plugins except Polylang as you need it to access this url (possibly change the theme too) and activate them one by one to find which one is responsible for this redirect.