Hi Riad,
So there are gallery blocks but these aren’t empty – the images in the gallery blocks show in the visual editor.
Here is the gallery block code from the code editor:
<!-- wp:gallery {"columns":2,"linkTo":"none","sizeSlug":"full"} -->
<figure class="wp-block-gallery has-nested-images columns-2 is-cropped"><!-- wp:image {"id":18149,"sizeSlug":"full","linkDestination":"none"} -->
<figure class="wp-block-image size-full"><img src="https://shelbyellis.co.uk/wp-content/uploads/2023/07/blake-hall-wedding-37.jpg" alt="bride reading her vows at wedding ceremony as her father watches on" class="wp-image-18149"/></figure>
<!-- /wp:image -->
Grateful for any help!