The error message you provided suggests that a Content Security Policy (CSP) directive is being violated due to an ancestor frame. Let's break it down:

Content Security Policy (CSP): This is a security standard that helps prevent various types of attacks, such as Cross-Site Scripting (XSS) and Clickjacking, by defining and enforcing a set of rules for resource loading on a web page.

Directive: CSP directives are rules that specify what resources are allowed to be loaded and executed on a web page. These directives are defined within the CSP header or within a meta tag in the HTML code.

'frame-ancestors' Directive: This specific directive controls which domains can embed the current page in an iframe. The value 'self' indicates that the page can only be embedded in iframes on the same domain.

Ancestor Frame: An ancestor frame is a parent or ancestor of the current frame or webpage. If this ancestor violates the 'frame-ancestors' directive by trying to embed the current page in an iframe, the violation occurs.

Violation: When the ancestor frame attempts to embed the page in an iframe and it violates the CSP directive, the browser blocks this action to maintain the security defined by the CSP.

To resolve this issue, you may need to adjust the CSP directive to allow embedding from the particular ancestor frame domain, if it's necessary for your application. Alternatively, you may need to modify the behavior of the ancestor frame so that it doesn't attempt to embed the page in a way that violates the CSP directive.