The blocks are no longer displayed

Hi,
On my site, I display article lift blocks on many pages. For example, on the page https://jean-francois-coatmeur.bzh/livres/ I placed the short code [post_grid id=”921″]. I notice today (it’s been a few days since I was on my site) that the blocks are no longer displayed but only a small square.
It’s the same for all my short code integrations: https://jean-francois-coatmeur.bzh/, https://jean-francois-coatmeur.bzh/films/, https://jean-francois-coatmeur.bzh/photos/…
I specify that this has worked perfectly for several years.
The last installed update of ComboBlocks dates from December 11, 2024. WordPress version: 6.7.1.
Thank you for your help

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