[ERROR]-[2017-10-11 20:21:58]-[org.b3log.latke.servlet.renderer.freemarker.AbstractFreeMarkerRenderer:138]: FreeMarker renders error FreeMarker template error: The following has evaluated to null or missing: ==> blogTitle [in template "index.ftl" at line 5, column 25] ---- Tip: If the failing expression is known to be legally refer to something that's sometimes null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)?? ---- ---- FTL stack trace ("~" means nesting-related): - Failed at: ${blogTitle} [in template "index.ftl" at line 5, column 23] - Reached through: @head title="${blogTitle}" [in template "index.ftl" at line 5, column 9] ---- Java stack trace (for programmers): ---- freemarker.core.InvalidReferenceException: [... Exception message was already printed; see it above ...] at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:131) at freemarker.core.EvalUtil.coerceModelToString(EvalUtil.java:355) at freemarker.core.Expression.evalAndCoerceToString(Expression.java:82) at freemarker.core.DollarVariable.accept(DollarVariable.java:41) at freemarker.core.Environment.visit(Environment.java:324) at freemarker.core.MixedContent.accept(MixedContent.java:54) at freemarker.core.Environment.visit(Environment.java:324) at freemarker.core.Environment.renderElementToString(Environment.java:2196) at freemarker.core.StringLiteral.evalAndCoerceToString(StringLiteral.java:96) at freemarker.core.StringLiteral._eval(StringLiteral.java:73) at freemarker.core.Expression.eval(Expression.java:78) at freemarker.core.Environment.setMacroContextLocalsFromArguments(Environment.java:739) at freemarker.core.Environment.invoke(Environment.java:689) at freemarker.core.UnifiedCall.accept(UnifiedCall.java:84) at freemarker.core.Environment.visit(Environment.java:324) at freemarker.core.MixedContent.accept(MixedContent.java:54) at freemarker.core.Environment.visit(Environment.java:324) at freemarker.core.Environment.process(Environment.java:302) at freemarker.template.Template.process(Template.java:325) at org.b3log.latke.servlet.renderer.freemarker.AbstractFreeMarkerRenderer.genHTML(AbstractFreeMarkerRenderer.java:162) at org.b3log.latke.servlet.renderer.freemarker.AbstractFreeMarkerRenderer.render(AbstractFreeMarkerRenderer.java:133) at org.b3log.latke.servlet.DispatcherServlet.result(DispatcherServlet.java:111) at org.b3log.latke.servlet.DispatcherServlet.service(DispatcherServlet.java:89) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.b3log.solo.filter.InitCheckFilter.doFilter(InitCheckFilter.java:87) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.b3log.solo.filter.PermalinkFilter.doFilter(PermalinkFilter.java:92) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.b3log.latke.servlet.filter.EncodingFilter.doFilter(EncodingFilter.java:71) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1100) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:687) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1476) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) [ERROR]-[2017-10-11 20:21:58]-[org.b3log.latke.servlet.HttpControl:104]: Request [ method=GET, URL=http://shenwuge.com/, contentType=null, characterEncoding=UTF-8, local=[ addr=..., port=80, name=...], remote=[ addr=..., port=7945, host=...], headers=[ host=shenwuge.com connection=keep-alive cache-control=max-age=0 user-agent=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.91 Safari/537.36 upgrade-insecure-requests=1 accept=text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8 accept-encoding=gzip, deflate accept-language=zh-CN,zh;q=0.8,en;q=0.6,zh-TW;q=0.4 cookie=Hm_lvt_34a9ac08ef3126b9b5e26956a16bcb9a=1505450787,1505583145,1506578246; Hm_lpvt_34a9ac08ef3126b9b5e26956a16bcb9a=1507697676; _ga=GA1.2.137106219.1505450787; _gid=GA1.2.2005742956.1507697676; skin=next; JSESSIONID=78C9A68023E02D10F4E33EDB6C536C84; visited=%5B%22%2F%22%2C%22%2Fshell-scp-expect%22%2C%22%2Fshell-awk-divide2file%22%2C%22%2Ftags.html%22%2C%22%2Farchives.html%22%2C%22%2Fdynamic.html%22%2C%22%2Ferror%2F500.html%22%5D ] ] processing failed java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.b3log.latke.servlet.handler.MethodInvokeHandler.handle(MethodInvokeHandler.java:58) at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99) at org.b3log.latke.servlet.handler.AdviceHandler.handle(AdviceHandler.java:108) at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99) at org.b3log.latke.servlet.handler.ArgsHandler.handle(ArgsHandler.java:60) at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99) at org.b3log.latke.servlet.handler.RequestDispatchHandler.handle(RequestDispatchHandler.java:92) at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99) at org.b3log.latke.servlet.handler.RequestPrepareHandler.handle(RequestPrepareHandler.java:45) at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99) at org.b3log.latke.servlet.handler.StaticResourceHandler.handle(StaticResourceHandler.java:119) at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99) at org.b3log.latke.servlet.DispatcherServlet.service(DispatcherServlet.java:84) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.b3log.solo.filter.InitCheckFilter.doFilter(InitCheckFilter.java:87) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.b3log.solo.filter.PermalinkFilter.doFilter(PermalinkFilter.java:92) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.b3log.latke.servlet.filter.EncodingFilter.doFilter(EncodingFilter.java:71) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1100) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:687) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1476) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.NullPointerException at org.b3log.solo.processor.util.Filler.fillIndexArticles(Filler.java:204) at org.b3log.solo.processor.util.Filler_$$_jvst1a0_25._d5fillIndexArticles(Filler_$$_jvst1a0_25.java) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.b3log.latke.ioc.bean.JavassistMethodHandler.invoke(JavassistMethodHandler.java:106) at org.b3log.solo.processor.util.Filler_$$_jvst1a0_25.fillIndexArticles(Filler_$$_jvst1a0_25.java) at org.b3log.solo.processor.IndexProcessor.showIndex(IndexProcessor.java:152) at org.b3log.solo.processor.IndexProcessor_$$_jvst1a0_4b._d8showIndex(IndexProcessor_$$_jvst1a0_4b.java) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.b3log.latke.ioc.bean.JavassistMethodHandler.invoke(JavassistMethodHandler.java:106) at org.b3log.solo.processor.IndexProcessor_$$_jvst1a0_4b.showIndex(IndexProcessor_$$_jvst1a0_4b.java) ... 48 more