Error:
Uncaught TypeError: Cannot read property 'after' of null

TypeError: Cannot read property 'after' of null
    at https://6999767-master-all.runbot46.odoo.com/web/assets/1834-7a8850c/1/web_editor.assets_wysiwyg.min.js:666:43
    at Array.forEach (<anonymous>)
    at EventTarget.deleteRange (https://6999767-master-all.runbot46.odoo.com/web/assets/1834-7a8850c/1/web_editor.assets_wysiwyg.min.js:665:785)
    at EventTarget._applyRawCommand (https://6999767-master-all.runbot46.odoo.com/web/assets/1834-7a8850c/1/web_editor.assets_wysiwyg.min.js:713:154)
    at EventTarget.<anonymous> (https://6999767-master-all.runbot46.odoo.com/web/assets/1834-7a8850c/1/web_editor.assets_wysiwyg.min.js:717:92)
    at EventTarget._protect (https://6999767-master-all.runbot46.odoo.com/web/assets/1834-7a8850c/1/web_editor.assets_wysiwyg.min.js:718:62)
    at EventTarget._applyCommand (https://6999767-master-all.runbot46.odoo.com/web/assets/1834-7a8850c/1/web_editor.assets_wysiwyg.min.js:717:74)
    at EventTarget._onInput (https://6999767-master-all.runbot46.odoo.com/web/assets/1834-7a8850c/1/web_editor.assets_wysiwyg.min.js:740:413)