用虚拟机安装 macOS，按照教程安装 Homestead，出现一个错误，请高手给点意见

我按照教程搭建完成，环境跟教程一样，只是操作系统是macOS，我想这应该不成问题

下面是刚搭建完成出现的错误提示

GavindeMac:~ gavin$ cd ~/Homestead && vagrant up
/opt/vagrant/embedded/lib/ruby/2.2.0/psych.rb:370:in `parse': (<unknown>): could not find expected ':' while scanning a simple key at line 35 column 1 (Psych::SyntaxError)
from /opt/vagrant/embedded/lib/ruby/2.2.0/psych.rb:370:in `parse_stream'
from /opt/vagrant/embedded/lib/ruby/2.2.0/psych.rb:318:in `parse'
from /opt/vagrant/embedded/lib/ruby/2.2.0/psych.rb:245:in `load'
from /Users/gavin/Homestead/Vagrantfile:25:in `block in <top (required)>'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/config/v2/loader.rb:37:in `call'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/config/v2/loader.rb:37:in `load'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/config/loader.rb:113:in `block (2 levels) in load'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/config/loader.rb:107:in `each'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/config/loader.rb:107:in `block in load'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/config/loader.rb:104:in `each'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/config/loader.rb:104:in `load'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/vagrantfile.rb:28:in `initialize'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/environment.rb:746:in `new'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/environment.rb:746:in `vagrantfile'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/environment.rb:492:in `host'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/environment.rb:214:in `block in action_runner'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/action/runner.rb:33:in `call'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/action/runner.rb:33:in `run'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/environment.rb:479:in `hook'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/lib/vagrant/environment.rb:728:in `unload'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/bin/vagrant:126:in `ensure in <main>'
from /opt/vagrant/embedded/gems/gems/vagrant-1.9.0/bin/vagrant:126:in `<main>'

然后我再初始化一次后，虚拟机顺利跑动。但到最后出现vt-x 错误提示

GavindeMac:Homestead gavin$ bash init.sh
overwrite /Users/gavin/.homestead/Homestead.yaml? (y/n [n]) y
overwrite /Users/gavin/.homestead/after.sh? (y/n [n]) y
overwrite /Users/gavin/.homestead/aliases? (y/n [n]) y
Homestead initialized!
GavindeMac:Homestead gavin$ vagrant up
Bringing machine 'homestead-7' up with 'virtualbox' provider...
==> homestead-7: Importing base box 'laravel/homestead'...
==> homestead-7: Matching MAC address for NAT networking...
==> homestead-7: Checking if box 'laravel/homestead' is up to date...
==> homestead-7: Setting the name of the VM: homestead-7
==> homestead-7: Clearing any previously set network interfaces...
==> homestead-7: Preparing network interfaces based on configuration...
homestead-7: Adapter 1: nat
homestead-7: Adapter 2: hostonly
==> homestead-7: Forwarding ports...
homestead-7: 80 (guest) => 8000 (host) (adapter 1)
homestead-7: 443 (guest) => 44300 (host) (adapter 1)
homestead-7: 3306 (guest) => 33060 (host) (adapter 1)
homestead-7: 5432 (guest) => 54320 (host) (adapter 1)
homestead-7: 22 (guest) => 2222 (host) (adapter 1)
==> homestead-7: Running 'pre-boot' VM customizations...
==> homestead-7: Booting VM...
There was an error while executing `VBoxManage`, a CLI used by Vagrant
for controlling VirtualBox. The command and stderr is shown below.
Command: ["startvm", "5182ebf4-6fe0-4bdc-82b8-e0bb36a1e3d0", "--type", "headless"]
Stderr: VBoxManage: error: VT-x is not available (VERR_VMX_NO_VMX)
VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component ConsoleWrap, interface IConsole