異常獲取服務器實例：沒有有效的實例ID此實例

當我改變我的本地谷歌App Engine應用程序日誌記錄級別爲FINE，我開始在我的跟蹤棧看到這些：異常獲取服務器實例：沒有有效的實例ID此實例

Apr 17, 2013 4:54:20 PM com.google.appengine.tools.development.DevAppServerServersFilter getCurrentServerInstance 
FINE: Exception getting server instance 
com.google.appengine.api.labs.servers.ServersException: No valid instance id for this instance. 
    at com.google.appengine.api.labs.servers.ServersServiceImpl.getCurrentInstanceId(ServersServiceImpl.java:75) 
    at com.google.appengine.tools.development.DevAppServerServersFilter.getCurrentServerInstance(DevAppServerServersFilter.java:210) 
    at com.google.appengine.tools.development.DevAppServerServersFilter.isServerLoadBalancingServerRequest(DevAppServerServersFilter.java:185) 
    at com.google.appengine.tools.development.DevAppServerServersFilter.getRequestType(DevAppServerServersFilter.java:174) 
    at com.google.appengine.tools.development.DevAppServerServersFilter.doFilter(DevAppServerServersFilter.java:112) 
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388) 
    at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) 
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) 
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765) 
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418) 
    at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:94) 
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) 
    at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:421) 
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) 
    at org.mortbay.jetty.Server.handle(Server.java:326) 
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) 
    at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923) 
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547) 
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) 
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) 
    at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409) 
    at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

任何想法這是和如何解決它？

來源

2013-04-17 Charlotte Tan