When using an iframe to a google doc, there appears no problem, but when I check the javascript console, still two errors are shown:
Refused to frame 'https://docs.google.com/' because an ancestor violates the following Content Security Policy directive: "frame-ancestors 'self' https://docs.google.com".
Refused to frame 'https://contacts.google.com/' because an ancestor violates the following Content Security Policy directive: "frame-ancestors https://docs.google.com".
I read in stackoverflow this, but I don’t know how to set such directive:
