cakephp: Built-in Server Crashes and Closes

This is a (multiple allowed):

• bug

• enhancement

• feature-discussion (RFC)

• CakePHP Version: v3.4.10

• Platform and Target: OS X Sierra, MySQL, Builtin Server

What you did

$this->belongsTo('Messages', array())->setEntityClass('Messages2')->setForeignKey('message_id')->setProperty('messages');

What happened

┌─[jlroberts@Jeffreys-iMac]─[~/Projects/JeffreyLRobertsCom/CakePHPKitchen/AdminLTE]
└──╼ bin/cake server -p 9000

Welcome to CakePHP v3.4.10 Console
---------------------------------------------------------------
App : src
Path: /Users/jlroberts/Projects/JeffreyLRobertsCom/CakePHPKitchen/AdminLTE/src/
DocumentRoot: /Users/jlroberts/Projects/JeffreyLRobertsCom/CakePHPKitchen/AdminLTE/webroot
---------------------------------------------------------------
built-in server is running in http://localhost:9000/
You can exit with `CTRL-C`

┌─[jlroberts@Jeffreys-iMac]─[~/Projects/JeffreyLRobertsCom/CakePHPKitchen/AdminLTE]
└──╼

What you expected to happen

The built-in server should be returning a page, not crashing…