Yoast Premium SEO Box not working (JS errors)

I have recently found that the Yoast SEO box on my product pages is no longer populated. All you get is a blank dialogue box , where there used to be meta tag/slug/keyword etc.

This is the error text I get from the JS console on *ALL* of my product pages now.

JQMIGRATE: Migrate is installed, version 1.4.1
wp-seo-post-scraper-1013.min.js:5 Uncaught TypeError: Cannot read property ‘getEditedPostAttribute’ of null
at t.default (wp-seo-post-scraper-1013.min.js:5)
at e.value (wp-seo-post-scraper-1013.min.js:5)
at e.value (wp-seo-post-scraper-1013.min.js:5)
at new e (wp-seo-post-scraper-1013.min.js:5)
at HTMLDocument.<anonymous> (wp-seo-post-scraper-1013.min.js:5)
at i (load-scripts.php:2)
at Object.fireWith [as resolveWith] (load-scripts.php:2)
at Function.ready (load-scripts.php:2)
at HTMLDocument.K (load-scripts.php:2)
onloadwff.js:71 Uncaught (in promise) TypeError: Cannot read property ‘querySelectorAll’ of null
at e.<anonymous> (onloadwff.js:71)
at onloadwff.js:71
at Object.next (onloadwff.js:71)
at a (onloadwff.js:71)

I am at a loss as the plugin is up to date and I did not do anything on the back end, that would have caused this?