老师求教一个问题,这个报错调试了很久都没解决，帮忙看一下

Consider the following:

If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.

If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).

Disconnected from the target VM, address: '127.0.0.1:52437', transport: 'socket'

JDK1.8版本  mvaer版本是3.3.9的