错误日志信息如下：
[INFO ]-[2017-10-12 23:16:45]-[org.b3log.solo.SoloServletListener:153]: Solo is running [http://www.tuchief.com] [ERROR]-[2017-10-12 23:17:08]-[org.b3log.latke.servlet.HttpControl:104]: Request [ method=GET, URL=http://www.tuchief.com/, contentType=null, characterEncoding=UTF-8, local=[ addr=172.31.205.50, port=80, name=172.31.205.50], remote=[ addr=36.248.245.76, port=10028, host=36.248.245.76], headers=[ Cookie=visited="[\"/\",\"/tags.html\"]"; b3log-latke="{\"userPassword\":\"4f7fb3703b192ce9c07922f8a24172fe\",\"userEmail\":\"call1832@gmail.com\"}"; JSESSIONID=1112oghw3t40kfo4lmj54tq4o; skin= Cache-Control=max-age=0 Accept=text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8 Upgrade-Insecure-Requests=1 Connection=keep-alive User-Agent=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36 Host=www.tuchief.com DNT=1 Accept-Encoding=gzip, deflate Accept-Language=zh-CN,zh;q=0.8 ] ] 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:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669) at org.b3log.solo.filter.InitCheckFilter.doFilter(InitCheckFilter.java:87) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) at org.b3log.solo.filter.PermalinkFilter.doFilter(PermalinkFilter.java:92) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) at org.b3log.latke.servlet.filter.EncodingFilter.doFilter(EncodingFilter.java:71) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) at org.eclipse.jetty.server.Server.handle(Server.java:497) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:245) at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.NullPointerException at org.b3log.solo.processor.util.Filler.fillIndexArticles(Filler.java:204) at org.b3log.solo.processor.util.Filler_$$_jvst5ee_24._d5fillIndexArticles(Filler_$$_jvst5ee_24.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_$$_jvst5ee_24.fillIndexArticles(Filler_$$_jvst5ee_24.java) at org.b3log.solo.processor.IndexProcessor.showIndex(IndexProcessor.java:152) at org.b3log.solo.processor.IndexProcessor_$$_jvst5ee_3d._d8showIndex(IndexProcessor_$$_jvst5ee_3d.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_$$_jvst5ee_3d.showIndex(IndexProcessor_$$_jvst5ee_3d.java) ... 43 more [ERROR]-[2017-10-12 23:17:09]-[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</#if>. (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:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669) at org.b3log.solo.filter.InitCheckFilter.doFilter(InitCheckFilter.java:87) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) at org.b3log.solo.filter.PermalinkFilter.doFilter(PermalinkFilter.java:92) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) at org.b3log.latke.servlet.filter.EncodingFilter.doFilter(EncodingFilter.java:71) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) at org.eclipse.jetty.server.Server.handle(Server.java:497) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:245) at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) at java.lang.Thread.run(Thread.java:748)
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