The custom rss doesn't work

Files within my theme, and code in routes.yaml
routes:
/podcast/rss/:
template: podcast/rss
content_type: text/xml
collections:
/:
permalink: /{slug}/
template: index
filter: tag:-podcast
/podcast/:
permalink: /podcast/{slug}/
filter: tag:podcast
taxonomies:
tag: /tag/{slug}/
author: /author/{slug}/
Your routes.yaml looks like it's not formatted correctly, can you try like this?
routes:
/podcast/rss/:
template: podcast/rss
content_type: text/xml
collections:
/:
permalink: /{slug}/
template: index
filter: tag:-podcast
/podcast/:
permalink: /podcast/{slug}/
filter: tag:podcast
taxonomies:
tag: /tag/{slug}/
author: /author/{slug}/
@allouis Awesome, thank you so much.
Most helpful comment
Your
routes.yamllooks like it's not formatted correctly, can you try like this?