Where is the blank.json file

Hello everyone…

More one day without success on sso. The domainmaster controller keep redirect to login page instead of sso

I follow this Single Sign On link on UMC login page is crossed out but everything reported is ok, the only thing that is not ok from my side is the blank.json always 404m the file doesn’t exist inside /etc/simplesamlphp directory… i don’t belive that is the problem because all other servers are doing the sso flawless :confused: