Out of the blue I get errors (edit: in Firebug console) thrown at me when deploying my app. I didn't change anything since last time when I deployed my app (3 days ago).
Error I get when loading the "Trust it"-page of my app is:
Load denied by X-Frame-Options: https://portal.office.com/landing.aspx? does not permit cross-origin framing.
When I then click "Trust it" i get more errors on my app-homepage:
"NetworkError: 503 Service Unavailable - https://cdn.sharepointonline.com/12359/_layouts/15/16.0.3222.1229/1043/initstrings.js"
ReferenceError: Strings is not defined https://cdn.sharepointonline.com/12359/_layouts/15/16.0.3222.1229/clienttemplates.js Line 1
"NetworkError: 503 Service Unavailable - https://cdn.sharepointonline.com/12359/_layouts/15/16.0.3222.1229/1043/SP.Res.js" SP.Res.js
"NetworkError: 503 Service Unavailable - https://cdn.sharepointonline.com/12359/_layouts/15/16.0.3222.1229/1043/strings.js" strings.js
Further I am nog logged on to a network, I am just working on my laptop with an internet connection. Besides those errors the app seems to work just fine, what is even stranger I suppose.
Does anyone know where this is coming from and how to fix it? Thanks in advance!!!
Edit: When login on on portal.office manually I get the following warning:
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at [url]. This can be fixed by moving the resource to the same domain or enabling CORS. [url]
This appears to be a security issue?