vagrant up  报错

/Users/lijiageng/Homestead/scripts/homestead.rb:108:in

read': No such file or directory @ rb_sysopen - /Users/lijiageng/.ssh/id_rsa (Errno::ENOENT)

    from /Users/lijiageng/Homestead/scripts/homestead.rb:108:in

block (2 levels) in configure'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/plugins/kernel_v2/config/vm_provisioner.rb:72:in

call'

    from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/plugins/kernel_v2/config/vm_provisioner.rb:72:in

add_config'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/plugins/kernel_v2/config/vm.rb:321:in

provision'

    from /Users/lijiageng/Homestead/scripts/homestead.rb:105:in

block in configure'
from /Users/lijiageng/Homestead/scripts/homestead.rb:104:in

each'

    from /Users/lijiageng/Homestead/scripts/homestead.rb:104:in

configure'
from /Users/lijiageng/Homestead/Vagrantfile:28:in

block in <top (required)>'

    from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/config/v2/loader.rb:37:in

call'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/config/v2/loader.rb:37:in

load'

    from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/config/loader.rb:113:in

block (2 levels) in load'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/config/loader.rb:107:in

each'

    from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/config/loader.rb:107:in

block in load'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/config/loader.rb:104:in

each'

    from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/config/loader.rb:104:in

load'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/vagrantfile.rb:28:in

initialize'

    from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/environment.rb:740:in

new'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/environment.rb:740:in

vagrantfile'

    from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/environment.rb:486:in

host'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/environment.rb:208:in

block in action_runner'

    from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/action/runner.rb:33:in

call'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/action/runner.rb:33:in

run'

    from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/environment.rb:473:in

hook'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/lib/vagrant/environment.rb:722:in

unload'

    from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/bin/vagrant:177:in

ensure in <main>'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.1/bin/vagrant:177:in `<main>'