重新加载(deploy all)项目有报错，但不影响项目运行

22-Nov-2018 11:00:11.975 信息 [Abandoned connection cleanup thread] org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading Illegal access: this web application instance has been stopped already. Could not load []. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.

 java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load []. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.

请问老师这是什么原因引起的呢？

特别是这句话this web application instance has been stopped already. Could not load []

应用程序实例已经停止时什么意思啊，但是项目能被正常访问添加修改用户信息没有受影响