020-03-21 13:39:53.118  INFO 14644 --- [  restartedMain] run.halo.app.listener.StartedListener    : Halo started at         http://127.0.0.1:8090
2020-03-21 13:39:53.119  INFO 14644 --- [  restartedMain] run.halo.app.listener.StartedListener    : Halo admin started at   http://127.0.0.1:8090/admin
2020-03-21 13:39:53.120  INFO 14644 --- [  restartedMain] run.halo.app.listener.StartedListener    : Halo has started successfully!

显示已经成功启动项目了，但是将前端登录地址复制到浏览器，显示的错误。
The page you are looking for is error
然后idea里面显示错误了


2020-03-21 13:39:53.118  INFO 14644 --- [  restartedMain] run.halo.app.listener.StartedListener    : Halo started at         http://127.0.0.1:8090
2020-03-21 13:39:53.119  INFO 14644 --- [  restartedMain] run.halo.app.listener.StartedListener    : Halo admin started at   http://127.0.0.1:8090/admin
2020-03-21 13:39:53.120  INFO 14644 --- [  restartedMain] run.halo.app.listener.StartedListener    : Halo has started successfully!
2020-03-21 13:42:19.993  INFO 14644 --- [  XNIO-1 task-1] io.undertow.servlet                      : Initializing Spring DispatcherServlet 'dispatcherServlet'
2020-03-21 13:42:19.995  INFO 14644 --- [  XNIO-1 task-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2020-03-21 13:42:20.082  INFO 14644 --- [  XNIO-1 task-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 85 ms
2020-03-21 13:42:22.131 ERROR 14644 --- [  XNIO-1 task-1] freemarker.runtime                       : Error executing FreeMarker template

freemarker.core.InvalidReferenceException: The following has evaluated to null or missing:
==> user  [in template "themes/anatole/module/macro.ftl" at line 13, column 36]

----
Tip: If the failing expression is known to 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: ${user.nickname!}  [in template "themes/anatole/module/macro.ftl" in macro "head" at line 13, column 34]
	- Reached through: @head title="${blog_title!}"  [in template "themes/anatole/index.ftl" at line 2, column 1]
----
	at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:134) ~[freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.UnexpectedTypeException.newDescriptionBuilder(UnexpectedTypeException.java:85) ~[freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.UnexpectedTypeException.<init>(UnexpectedTypeException.java:48) ~[freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.NonHashException.<init>(NonHashException.java:49) ~[freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.Dot._eval(Dot.java:48) ~[freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.Expression.eval(Expression.java:101) ~[freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.DefaultToExpression._eval(DefaultToExpression.java:88) ~[freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.Expression.eval(Expression.java:101) ~[freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.DollarVariable.calculateInterpolatedStringOrMarkup(DollarVariable.java:100) ~[freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.DollarVariable.accept(DollarVariable.java:63) ~[freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.Environment.visit(Environment.java:367) [freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.Environment.invokeMacroOrFunctionCommonPart(Environment.java:872) [freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.Environment.invokeMacro(Environment.java:809) [freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.UnifiedCall.accept(UnifiedCall.java:83) [freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.Environment.visit(Environment.java:331) [freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.Environment.visit(Environment.java:337) [freemarker-2.3.29.jar:2.3.29]
	at freemarker.core.Environment.process(Environment.java:310) [freemarker-2.3.29.jar:2.3.29]
	at freemarker.template.Template.process(Template.java:383) [freemarker-2.3.29.jar:2.3.29]
	at org.springframework.web.servlet.view.freemarker.FreeMarkerView.processTemplate(FreeMarkerView.java:391) [spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at org.springframework.web.servlet.view.freemarker.FreeMarkerView.doRender(FreeMarkerView.java:304) [spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at org.springframework.web.servlet.view.freemarker.FreeMarkerView.renderMergedTemplateModel(FreeMarkerView.java:255) [spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at org.springframework.web.servlet.view.AbstractTemplateView.renderMergedOutputModel(AbstractTemplateView.java:179) [spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316) [spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1373) [spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1118) [spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1057) [spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) [spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) [spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) [spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:503) [jakarta.servlet-api-4.0.3.jar:4.0.3]
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) [spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:590) [jakarta.servlet-api-4.0.3.jar:4.0.3]
	at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74) [undertow-servlet-2.0.28.Final.jar:2.0.28.Final]
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129) [undertow-servlet-2.0.28.Final.jar:2.0.28.Final]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:103) [spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) [undertow-servlet-2.0.28.Final.jar:2.0.28.Final]
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) [undertow-servlet-2.0.28.Final.jar:2.0.28.Final]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:103) [spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) [undertow-servlet-2.0.28.Final.jar:2.0.28.Final]