The toy ooui client https://gerrit.wikimedia.org/r/#/c/93525/4/modules/js/ext.agora.ui.js creates a dialog with

MyDialog.static.icon = 'help';

This help icon and the stock dialog close icon don't appear, the CSS references.

background-image: url("images/icons/close.svg");

which is a 404.

VE team knows about this, the necessary assets aren't declared.

Version: unspecified
Severity: normal