I am getting identical console errors, stemming from the wp-seo-post-scrapper script. I cannot use premium on 5.3.1 sites so and forced to keep them rolled back until this is resolved. So technically speaking this is creating a security issue in that I can run the latest security patches.
I am having similiar issues, the backend editor breaks when Yoast Premium is enabled, the free version is fine, put the paid version breaks the editor pages. I need a fix for this right away so I can upgrade my client sites to 5.3.1
