Podcast CMS validation failure

Hi there, I purchased a podcast template and I am now creating a new Podcasts of my own. All the links I’ve put in are valid, I want to launch the new podcast to see what I looks like but I keep getting a validation failure error! Why is that and how can I fix it?

You can see the podcast I’m trying to create in drafts. The name is: Introducing Branch 251 - Syrian Atrocity Crimes on Trial

Readonly: https://preview.webflow.com/preview/branch-251?utm_medium=preview_link&utm_source=dashboard&utm_content=branch-251&preview=7105492ff493cbd8c83f345876526f7a&mode=preview