I just upgraded from 2.3.4 to 2.4.1 , before there is no issue when load content using iframe, but now there is always an error message:
Refused to display 'http://test.m2.local/test/index/test/' in a frame because it set 'X-Frame-Options' to 'deny'.
Refused to display '' in a frame because it set multiple 'X-Frame-Options' headers with conflicting values ('DENY, SAMEORIGIN'). Falling back to 'deny'.
the app/etc/env.php already included SAMEORDIGIN configuration
'x-frame-options' => 'SAMEORIGIN',
before i upgrade to 2.4.1, i duplicated the 2.3.4 instance and hosted in different sub domain in the same server, but it does not get any error
I already set in ssl configuration like this:
Header always set X-Frame-Options SAMEORIGIN
then i got this kinda same error result:
Refused to display '' in a frame because it set multiple 'X-Frame-Options' headers with conflicting values ('DENY, SAMEORIGIN, SAMEORIGIN'). Falling back to 'deny'.
