PredectionIO via vagrant ： pio-start-all： 命令未找到

问：

我已经挣扎了几个星期，只是为了安装 PredictionIO。 今天，我遇到了一种新的“简单”方法，可以通过流浪者进行安装：https://www.sitepoint.com/predictionio-bootstrapping-a-movie-recommendation-app/

当我键入它时，它给出以下输出：$ vagrant up

Bringing machine 'default' up with 'virtualbox' provider...
==> default: Checking if box 'ubuntu/trusty64' is up to date...
==> default: Machine already provisioned. Run `vagrant provision` or use the `--provision`
==> default: flag to force provisioning. Provisioners marked to run always will still run.
==> default: Running provisioner: shell...
    default: Running: /tmp/vagrant-shell20170925-16688-9a1tte.sh
==> default: PredictionIO already installed. Skip installation. 


**==> **default: /tmp/vagrant-shell: line 32: pio-start-all: command not** found**



==> default: --------------------------------------------------------------------------------
==> default: PredictionIO VM is up!
==> default: You could run 'pio status' inside VM ('vagrant ssh' to VM first) to confirm if PredictionIO is ready.
==> default: IMPORTANT: You still have to start the eventserver manually (inside VM):
==> default: Run: 'pio eventserver --ip 0.0.0.0'
==> default: 

请帮忙，我不是linux和vagrant的专家