I was trying to update php to php7 by following
ee site update mydomain.com --php7
But ended up with FATAL -> Failed to fork. error message. No matter how many times I tried, the errors were never fixed.
Then I tried
ee stack status, but it also returned FATAL -> Failed to fork.
I’m running EE on a openvz server, but I rarely faced these troubles on KVM, so EE perhaps isn’t friendly to openvz, however if anyone knows how to fix these issues, I’d appreciate it.