Error with WP 7.0 and Gutenberg

Hi,

When I open the Gutenberg editor for editing a page, I’ve got these numerous errors (99+):

Uncaught DOMException: Permission denied to access property "document" on cross-origin object
    updatePageBackground https://my-website.tld/wp-content/themes/astra/inc/assets/js/minified/block-editor-script.min.js:1
    astra_onload_function https://my-website.tld/wp-content/themes/astra/inc/assets/js/minified/block-editor-script.min.js:1
    setTimeout handler*astra_onload_function/< https://my-website.tld/wp-content/themes/astra/inc/assets/js/minified/block-editor-script.min.js:1
    <anonymous> https://my-website.tld/wp-includes/js/dist/data.min.js:1
    n https://my-website.tld/wp-includes/js/dist/data.min.js:1
    emit https://my-website.tld/wp-includes/js/dist/data.min.js:1
    s https://labo-bjh.dream-box.org/wp-includes/js/dist/data.min.js:1
    ye https://my-website.tld/wp-includes/js/dist/data.min.js:1
    <anonymous> https://my-website.tld/wp-includes/js/dist/data.min.js:1
    <anonymous> https://my-website.tld/wp-includes/js/dist/data.min.js:1
    b https://my-website.tld/wp-includes/js/dist/data.min.js:1
    <anonymous> https://my-website.tld/wp-includes/js/dist/data.min.js:1
    <anonymous> Redux
    <anonymous> https://my-website.tld/wp-includes/js/dist/data.min.js:1
    <anonymous> https://my-website.tld/wp-includes/js/dist/data.min.js:1
    i

I use 4.13.3 (and Astra pro, but error concerns the free Astra theme). And WordPress 7.0

How could I solve this issue ?

Thanks a lot,
Best regards