【待反馈】出错了，面板运行时发生错误！

为了能快速了解并处理您的问题，请提供以下基础信息：

面板、插件版本：

系统版本：

问题描述：

TypeError: 'NoneType' object is not iterable

相关截图（日志、错误）：

REQUEST_DATE: 2023-05-30 01:44:43 PAN_VERSION: 7.9.10  OS_VERSION: CentOS  7.9.2009 x86_64(Py3.7.9) REMOTE_ADDR: 58.47.143.7 REQUEST_URI: POST /project/java/get_project_list?REQUEST_FORM: {＇data＇: ＇{＂p＂:1,＂limit＂:10}＇}  USER_AGENT: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36 Edg/113.0.1774.57Traceback (most recent call last):  File "/www/server/panel/class/projectModel/javaModel.py", line 620, in get_vhost    Hosts = self.__ENGINE.getchildren()AttributeError: 'NoneType' object has no attribute 'getchildren'During handling of the above exception, another exception occurred:Traceback (most recent call last):  File "/www/server/panel/BTPanel/__init__.py", line 2006, in publicObject    res = run_obj.run(toObject, defs, get)  File "/www/server/panel/BTPanel/__init__.py", line 1953, in run    result = getattr(toObject, get.action)(get)  File "class/panelController.py", line 81, in model    result = PluginLoader.module_run(module_name,def_name,pdata)  File "/www/server/panel/class/projectModel/javaModel.py", line 2610, in get_project_list    if self.get_vhost(data['data']['name']):  File "/www/server/panel/class/projectModel/javaModel.py", line 622, in get_vhost    Hosts = list(self.__ENGINE)TypeError: 'NoneType' object is not iterable

您好，能否详细的说明一下，在这个报错之前您操作了什么吗？只有知道您之前操作了什么，才能快速的定位问题，更快速的为您解决问题