ブロックエディタ「Guternberg」のエラー

Guternbergを使うようになって頻発するエラーのログを確認すると、

TypeError: Cannot read property ‘yoast/how-to-block’ of undefined
at zn (https://chigyo.com/aqua/wp-includes/js/dist/editor.min.js?ver=9.0.11:55:45280)
at https://chigyo.com/aqua/wp-includes/js/dist/editor.min.js?ver=9.0.11:55:46071
at Array.map (<anonymous>)
at https://chigyo.com/aqua/wp-includes/js/dist/editor.min.js?ver=9.0.11:55:45906
at u (https://chigyo.com/aqua/wp-includes/js/dist/editor.min.js?ver=9.0.11:12:3427)
at https://chigyo.com/aqua/wp-includes/js/dist/data.min.js?ver=4.2.1:1:6379
at https://chigyo.com/aqua/wp-includes/js/dist/editor.min.js?ver=9.0.11:55:109194
at n (https://chigyo.com/aqua/wp-includes/js/dist/data.min.js?ver=4.2.1:1:13036)
at new r (https://chigyo.com/aqua/wp-includes/js/dist/data.min.js?ver=4.2.1:1:13298)
at zf (https://chigyo.com/aqua/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.6.3:69:258)

TypeError: Cannot read property ‘core/paragraph’ of undefined
at zn (https://chigyo.com/aqua/wp-includes/js/dist/editor.min.js?ver=9.0.11:55:45280)
at https://chigyo.com/aqua/wp-includes/js/dist/editor.min.js?ver=9.0.11:55:46071
at Array.map (<anonymous>)
at https://chigyo.com/aqua/wp-includes/js/dist/editor.min.js?ver=9.0.11:55:45906
at u (https://chigyo.com/aqua/wp-includes/js/dist/editor.min.js?ver=9.0.11:12:3427)
at https://chigyo.com/aqua/wp-includes/js/dist/data.min.js?ver=4.2.1:1:6379
at https://chigyo.com/aqua/wp-includes/js/dist/editor.min.js?ver=9.0.11:55:109194
at n (https://chigyo.com/aqua/wp-includes/js/dist/data.min.js?ver=4.2.1:1:13036)
at new r (https://chigyo.com/aqua/wp-includes/js/dist/data.min.js?ver=4.2.1:1:13298)
at zf (https://chigyo.com/aqua/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.6.3:69:258)

上記のようなエラーが出るのでプラグインの導入が問題かと思っていたのですが、どうやら、独自SSL[https]が悪さをしていることが判明しました。

http://ホームページ/wp-admin

で作業していると、ブロックエディタのエラーが出ないのですが

https://ホームページ/wp-admin

上記のように、独自SSLにしてするとエラーになることが確定しました。これにより、サイトの編集中は、独自SSLを使わないようにしました。