Hello @dmarcus thanks for your question.
From the error you are getting I would say that the CSP in your website is restricting the content that your web application can embed using iframes (which is the underlying technology used on QS embedding).
Can you review your website CSP to see which is the policy you have applied?
CSP can be implemented either on the server side (returning the Content-Security-Policy HTTP header) or by setting it via a meta element
<meta
http-equiv="Content-Security-Policy"
content="default-src 'self'; img-src https://*; child-src 'none';" />
If this changed suddenly from one day to another I would suggest you to contact the application owner of the website you are embedding QS on or your security team as they should be able to shed some light on any changes to CSP that might have happened recently.
Hope this helps you to find the root cause of the issue.
Kind regards and happy dashboarding!