I am using Parallels Desktop for Mac, Business edition, version 16.1.2. Host OS is Big Sur (11.1 20C69). I cannot start Big Sur VMs (same macOS version) with "prlctl start" command unless user is logged into host. For example, using that command when logged in via SSH reports VM started, but it stays stopped. That command won't work for Big Sur VM unless I log into macOS. It does work for Catalina and Mojave VMs, though.