Cannot import from American Psych Assn journal RSS feed

The above rss feed lists recent publications from an American Psychological Society journal – the link to the feed is at https://www.apa.org/pubs/journals/psp/

However I get the following error message when the feed does not fetch:-
Failed to fetch the RSS feed. Error: A feed could not be found at ‘https://content.apa.org/journals/psp.rss’; the status code is ‘200’ and content type is ”

The feed does not require authentication.

I’d be most grateful if you could advise me what to do!!

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