@ngdoc error
@name $sce:unsafe
@fullName Require a safe/trusted value
@description

The value provided for use in a specific context was not found to be safe/trusted for use.

Angular's {@link ng.$sce Strict Contextual Escaping (SCE)} mode
(enabled by default), requires bindings in certain
contexts to result in a value that is trusted as safe for use in such a context.  (e.g. loading an
Angular template from a URL requires that the URL is one considered safe for loading resources.)

This helps prevent XSS and other security issues.  Read more at {@link
api/ng.$sce Strict Contextual Escaping (SCE)}