Refused to display issue

Hi everyone,
i have a issue with the plugin, a couple of weeks ago everything worked fine but today when i try to modify the pdf i have this error:

Refused to display ‘https://flowpaper.com/flipbook/?pdf=https://www.carrefour-sicilia.it/wp-content/uploads/2018/06/MK12-MARKET-DAL-7-AL-20-GIUGNO-DEFINITIVO.pdf?wp-hosted=1&title=&header=&theme=&thumbs=1&modified=1806061239’ in a frame because it set ‘X-Frame-Options’ to ‘sameorigin’.

can someone tell me how to solve it?
Thank you

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