I have a macos with Postman on local machine while, my sense server is in Windows 10 on AWS with all ports open on 4242, 4243, 443 etc.
I try to call about with the xrfkey and the X-Qlik-User=INTERNAL;UserId=sa_api and I get an error message saying "Unknown user not allowed for repository calls, missing or malformed http header: X-Qlik-User"
I try the same method with the same cert and key files on another Windows 10 OS machine and it works fine.
I can launch hub and qmc from my macOS and windows OS machine just fine.
Is there something unique in macOS that does not permit API calls with sense?