Is there ANY WAY that could make my random url work in create talk?

Hi, we've been struggling with this issue for several days.

In ['Create a talk stream : Script : Stream Audio Script : audio_url], audio_url doesn't works with our personalized url that has a specific port number. We've also tried with the proxy, but doesn't work either.

{'kind': 'BadRequestError', 'description': 'script sanitization failed'} keep appears with a response code 400. How can we deal with it?