I am new to Podcast and I am looking for some podcast validator which will tell if the podcast url is valid and the audio object.
For example
https://anchor.fm/123123XYZ/rss
if there is no audio, it should return with some error and if there is an audio enclosure, it should return with the audio url.
You could try either of these two resources...
https://castfeedvalidator.com/
They allow you to enter in the URL of your podcast rss feed. They will then parse (go through) the feed and check that each of its elements is valid.