«TypeError: this.trigger is not a function» in lib/web/mage/backend/validation.js on line 205 (and my fix)

[dmitrii_fediuk]

The problem line is
https://github.com/magento/magento2/blob/2fc983463ca5ae4a78159674f65e3c7ad4a9beaf/lib/web/mage/backend/validation.js#L205

To fix the issue replace the problem line with the new one:

$('body').trigger('processStop');

https://github.com/magento/magento2/issues/2270