I am getting an error in Odoo 9 Community whenever I try to print any report (PDF) from the backend. Error confirmed to occur for sale, invoice, purchase, and delivery reports. This only happens in Chrome - it works without errors in Firefox.

Despite the error, the reports DO still print normally.

I do have web.base.url set in the System Parameters and I don't have any other odd behaviors.

Error thrown by Odoo is:

Odoo Client Error:

Uncaught SecurityError: Failed to read the 'contentDocument' property from 'HTMLIFrameElement': Blocked a frame with origin "http://my.domain.com" from accessing a cross-origin frame.

http://my.domain.com/web/static/src/js/framework/ajax.js:231

Traceback:

Error: Failed to read the 'contentDocument' property from 'HTMLIFrameElement': Blocked a frame with origin "http://my.domain.com" from accessing a cross-origin frame.
    at Error (native)
    at HTMLIFrameElement.<anonymous> (http://my.domain.com/web/static/src/js/framework/ajax.js:231:36)
    at HTMLIFrameElement.dispatch (http://my.domain.com/web/static/lib/jquery/jquery.js:4641:58)
    at HTMLIFrameElement.elemData.handle (http://my.domain.com/web/static/lib/jquery/jquery.js:4309:63)

Error thrown by Chrome Console:

Refused to display 'http://my.domain.com/report/download' in a frame because it set 'X-Frame-Options' to 'DENY'.


Uncaught SecurityError: Failed to read the 'contentDocument' property from 'HTMLIFrameElement': Sandbox access violation: Blocked a frame at "http://my.domain.com" from accessing a frame at "null".  The frame being accessed is sandboxed and lacks the "allow-same-origin" flag.

Why is this error being thrown and how can it be fixed?