Thanks a lot @bungeshea
Indeed, I discovered these errors!!!
JQMIGRATE: Migrate is installed, version 3.4.0
post-1000.css:1 Failed to load resource: the server responded with a status of 404 ()
post-1050.css:1 Failed to load resource: the server responded with a status of 404 ()
post-1050.css:1 Failed to load resource: the server responded with a status of 404 ()
post-1000.css:1 Failed to load resource: the server responded with a status of 404 ()
DevTools failed to load source map: Could not load content for https://mywebsitedomain/wp-content/plugins/elementor/assets/lib/swiper/v8/swiper-bundle.min.js.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
DevTools failed to load source map: Could not load content for https://mywebsitedomain/wp-content/plugins/advanced-custom-fields-pro/assets/build/css/acf-input.css.map: Connection error: net::ERR_CONNECTION_RESET
I think I have to sent a message to my host’s support team… Is there anything in particular to highlight in my request?