Server HTTP状态500-内部服务器错误RapidClipse

我有一台新的笔记本电脑，我想再次参与我的RapidClipse项目。因此，我安装了RapidClipse，打开了我的项目，在设计器上发现了一个内部服务器错误。我在谷歌上搜索了一下，找不到任何解决办法。以下是错误代码：

Type Exception Report

Message com.vaadin.server.ServiceException: java.lang.IllegalStateException: Push is not available. See previous log messages for more information.

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

javax.servlet.ServletException: com.vaadin.server.ServiceException: java.lang.IllegalStateException: Push is not available. See previous log messages for more information.
    com.vaadin.server.VaadinServlet.service(VaadinServlet.java:382)
    com.xdev.communication.XdevServlet.service(XdevServlet.java:207)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    org.apache.catalina.filters.AddDefaultCharsetFilter.doFilter(AddDefaultCharsetFilter.java:88)
    org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
Root Cause

com.vaadin.server.ServiceException: java.lang.IllegalStateException: Push is not available. See previous log messages for more information.
    com.vaadin.server.VaadinService.handleExceptionDuringRequest(VaadinService.java:1487)
    com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1447)
    com.vaadin.server.VaadinServlet.service(VaadinServlet.java:380)
    com.xdev.communication.XdevServlet.service(XdevServlet.java:207)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    org.apache.catalina.filters.AddDefaultCharsetFilter.doFilter(AddDefaultCharsetFilter.java:88)
    org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
Root Cause

java.lang.IllegalStateException: Push is not available. See previous log messages for more information.
    com.vaadin.ui.PushConfigurationImpl.setPushMode(PushConfiguration.java:207)
    com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:210)
    com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:74)
    com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)
    com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1435)
    com.vaadin.server.VaadinServlet.service(VaadinServlet.java:380)
    com.xdev.communication.XdevServlet.service(XdevServlet.java:207)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    org.apache.catalina.filters.AddDefaultCharsetFilter.doFilter(AddDefaultCharsetFilter.java:88)
    org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
Note The full stack trace of the root cause is available in the server logs.

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可能会有很多问题。首先，这与新旧笔记本电脑无关。项目的第二个配置可能已过时，或者如果已安装任何外部插件，也可能导致问题

有关疑难解答： 1.卸载rapidclipse。 2.根据操作系统，从用户主目录中删除.m2和.p2文件夹。 3.将项目文件夹移到其他位置删除工作区。 4.重新安装rapidclipse。 5.创建新的工作区。 6.将项目复制到新工作区中。 7.将其导入您的rapidclipse