Error getting landing page content

Hi, when I try the get the landing page content from the API using this endpoint "/rest/asset/v1/landingPage/{id}/content.json" in some cases the API returns this message {"code":"611","message":"Unable to get landing page content"}. But if I load the landing page on the Marketo UI, works fine and then I try again from the API and works fine too.

Can I do something to avoid this behavior?

Regards,

Guillermo