请帮忙！ 在我更新了流浪者和宅基地之后，宅基地没有带来页面。我试图重新安装vagrant，vm，homestead，但同样的空页面有502 Bad Gateway和nginx错误继续出现。这是'homestead up'命令的代码：
pavelkrotov$ homestead up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Importing base box 'laravel/homestead'...
==> default: Matching MAC address for NAT networking...
==> default: Checking if box 'laravel/homestead' is up to date...
==> default: Setting the name of the VM: homestead
==> default: Clearing any previously set network interfaces...
==> default: Preparing network interfaces based on configuration...
default: Adapter 1: nat
default: Adapter 2: hostonly
==> default: Forwarding ports...
default: 80 (guest) => 8000 (host) (adapter 1)
default: 443 (guest) => 44300 (host) (adapter 1)
default: 3306 (guest) => 33060 (host) (adapter 1)
default: 5432 (guest) => 54320 (host) (adapter 1)
default: 22 (guest) => 2222 (host) (adapter 1)
==> default: Running 'pre-boot' VM customizations...
==> default: Booting VM...
==> default: Waiting for machine to boot. This may take a few minutes...
default: SSH address: 127.0.0.1:2222
default: SSH username: vagrant
default: SSH auth method: private key
default:
default: Vagrant insecure key detected. Vagrant will automatically replace
default: this with a newly generated keypair for better security.
default:
default: Inserting generated public key within guest...
default: Removing insecure key from the guest if it's present...
default: Key inserted! Disconnecting and reconnecting using new SSH key...
==> default: Machine booted and ready!
==> default: Checking for guest additions in VM...
==> default: Setting hostname...
==> default: Configuring and enabling network interfaces...
==> default: Mounting shared folders...
default: /vagrant => /Users/pavelkrotov/.composer/vendor/laravel/homestead
default: /home/vagrant/Sites => /Users/pavelkrotov/Sites
==> default: Running provisioner: file...
==> default: Running provisioner: shell...
default: Running: inline script
==> default: ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCepZ6J7i8UruJj/Qvw7j7GFYgLYajrE4GqSUO1tK4o3KFZh1pttt8lHKMqSfR1Ltw4/qA0ZtX2iqTh8INe1zaI8kFooxC0vURyEdzu1OLRvast6AGFXIsY6QXI8/5ayWoRBVPfeaphoO/QlbwaN9hjG/V0ux0dC9gk4vsKKQsxcN+MkEMDLUICYb4X+3AN8G3ROvc6iGae+CDvrwUhbAQy04CLJSmEFYk8Dp4HCEjynuzSynXeQKL2yyAx9aBmjMualREkITxkJ5c9m4TGqEBU3r9yQcxWOJ5m4tEvvjhmW4uSzglxNapD1rt4BqZuuLkM/33A2nRvPixbJHh5VtRp you@homestead
==> default: Running provisioner: shell...
default: Running: inline script
==> default: Running provisioner: shell...
default: Running: /var/folders/0w/tk3pjfvx4jn5bnx1kjdv2hxw0000gn/T/vagrant-shell20160104-29643-12jcfdq.sh
==> default: Running provisioner: shell...
default: Running: /var/folders/0w/tk3pjfvx4jn5bnx1kjdv2hxw0000gn/T/vagrant-shell20160104-29643-5yn8ap.sh
==> default: nginx stop/waiting
==> default: nginx start/running, process 1831
==> default: php5-fpm: unrecognized service
The SSH command responded with a non-zero exit status. Vagrant
assumes that this means the command failed. The output for this command
should be in the log above. Please read the output to determine what
went wrong.
发生了什么事？如何解决这个问题？感谢