Can't Type Text Body while Creating Posts or Pages in WordPress

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Wordpress error while create new post

I suspect this error is being caused by the fact that you’re using Cloudflare with their “Automatic HTTPS Rewrites”. This is why we recommend against using such “magic fixing options”, because they have a tendency to break in strange ways. Can you please try to configure your website like this instead and see if that works? https://infinityfree.net/support/wordpress-and-cloudflare-flexible-ssl/