【待反馈】升级面板的应用时出现以下报错

升级软件的时候，提示发生错误，点击了修复之后再试也没用，请问这应该如何解决呢？
而且原本邮箱管理局里的域名列表里的域名也看不到了，邮箱管理局左侧边栏的按钮也全都点不动了。


出错了，面板运行时发生错误！面板运行时发生错误: 软件包下载失败，请重试
REQUEST_DATE: 2022-10-21 00:32:31 PAN_VERSION: 7.9.4  OS_VERSION: CentOS  8.5.2111 x86_64(Py3.7.9) REMOTE_ADDR: 59.42.28.145 REQUEST_URI: POST /plugin?action=install_pluginREQUEST_FORM: {'sName': 'mail_sys', 'version': '4', 'min_version': '7', 'upgrade': '4'}  USER_AGENT: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36 Edg/106.0.1370.47Traceback (most recent call last):  File "/www/server/panel/BTPanel/__init__.py", line 1826, in publicObject    return run_exec().run(toObject, defs, get)  File "/www/server/panel/BTPanel/__init__.py", line 1778, in run    result = getattr(toObject,get.action)(get)  File "class/panelPlugin.py", line 744, in install_plugin    result = self.install_sync(pluginInfo,get)  File "class/panelPlugin.py", line 788, in install_sync    return self.__install_plugin(pluginInfo['name'], get.version)  File "class/panelPlugin.py", line 90, in __install_plugin    filename = self.__download_plugin(upgrade_plugin_name,upgrade_version)  File "class/panelPlugin.py", line 538, in __download_plugin    raise public.PanelError('软件包下载失败，请重试')public.PanelError: 面板运行时发生错误: 软件包下载失败，请重试

您好！切换节点试试是否可以恢复正常