if the error iS like , X- Frame option set to SAMEORIGIN
U SHOULD EDIT THE HEADER IN " .HTACCEESS " file by
" Header always unset X-Frame-Options "
instead of " Header always append X-Frame-Options to SAMEORIGIN " .
or simply delete this line "Header always append X-Frame-Options to SAMEORIGIN" and put this " Header always unset X-Frame-Options " line