odoo 15 

after drop snnipet(which snnipet have img tag like "Text-Image") in webpage got this error :=

UncaughtPromiseError > TypeError

Uncaught Promise > gradient.replaceAll is not a function

TypeError: gradient.replaceAll is not a function
    at https://14351040-15-0.runbot40.odoo.com/web/assets/334-980de32/1/web_editor.assets_wysiwyg.min.js:1126:222
    at NodeList.forEach ()
    at Class.start (https://14351040-15-0.runbot40.odoo.com/web/assets/334-980de32/1/web_editor.assets_wysiwyg.min.js:1126:157)
    at Class.prototype. [as start] (https://14351040-15-0.runbot40.odoo.com/web/assets/323-087ae88/1/web.assets_common_lazy.min.js:4576:488)
    at https://14351040-15-0.runbot40.odoo.com/web/assets/323-087ae88/1/web.assets_common_lazy.min.js:4914:52
    at async Class.start (https://14351040-15-0.runbot40.odoo.com/web/assets/334-980de32/1/web_editor.assets_wysiwyg.min.js:1580:790)
    at async Promise.all (index 0)
    at async Class._renderOriginalXML (https://14351040-15-0.runbot40.odoo.com/web/assets/334-980de32/1/web_editor.assets_wysiwyg.min.js:1692:1)
    at async Promise.all (index 58)
    at async Promise.all (index 1)