[halo-dev/halo]没有标签时，直接访问 /tags 系统报错

是什么版本出现了此问题？
2.10.2
使用的什么数据库？
使用的哪种方式运行？
Docker
在线站点地址
http://www.shiayanga.top/tags
发生了什么？
相关日志输出
org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "(isRandomImage == null ? #annotations.getOrDefault(extension, 'randomImage', true) : isRandomImage) and not #strings.isEmpty(theme.config.random_image.rimage_url) and (_templateId == 'post' ? theme.config.random_image.rimage_cover_open : theme.config.random_image.rimage_cover_sheet_open)" (template: "macro/page-header" - line 4, col 3)
        at org.thymeleaf.spring6.expression.SPELVariableExpressionEvaluator.evaluate(SPELVariableExpressionEvaluator.java:292) ~[thymeleaf-spring6-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
Error has been observed at the following site(s):
        *__checkpoint ⇢ Handler run.halo.app.theme.router.factories.TagsRouteFactory$$Lambda$2480/0x00007fa6bbb45b58@39d7a83a [DispatcherHandler]
        *__checkpoint ⇢ run.halo.app.security.InitializeRedirectionWebFilter [DefaultWebFilterChain]
        *__checkpoint ⇢ run.halo.app.security.authentication.login.UsernamePasswordLogoutHandler [DefaultWebFilterChain]
        *__checkpoint ⇢ run.halo.app.security.authentication.login.DelegatingLogoutPageGeneratingWebFilter [DefaultWebFilterChain]
        *__checkpoint ⇢ run.halo.app.security.authentication.login.UsernamePasswordAuthenticator [DefaultWebFilterChain]
        *__checkpoint ⇢ AuthorizationWebFilter [DefaultWebFilterChain]
        *__checkpoint ⇢ ExceptionTranslationWebFilter [DefaultWebFilterChain]
        *__checkpoint ⇢ LogoutWebFilter [DefaultWebFilterChain]
        *__checkpoint ⇢ ServerRequestCacheWebFilter [DefaultWebFilterChain]
        *__checkpoint ⇢ SecurityContextServerWebExchangeWebFilter [DefaultWebFilterChain]
        *__checkpoint ⇢ HaloAnonymousAuthenticationWebFilter [DefaultWebFilterChain]
        *__checkpoint ⇢ ReactorContextWebFilter [DefaultWebFilterChain]
        *__checkpoint ⇢ CsrfWebFilter [DefaultWebFilterChain]
        *__checkpoint ⇢ HttpHeaderWriterWebFilter [DefaultWebFilterChain]
        *__checkpoint ⇢ ServerWebExchangeReactorContextWebFilter [DefaultWebFilterChain]
        *__checkpoint ⇢ org.springframework.security.web.server.WebFilterChainProxy [DefaultWebFilterChain]
        *__checkpoint ⇢ org.springframework.web.filter.reactive.ServerHttpObservationFilter [DefaultWebFilterChain]
        *__checkpoint ⇢ HTTP GET "/tags" [ExceptionHandlingWebHandler]
Original Stack Trace:
                at org.thymeleaf.spring6.expression.SPELVariableExpressionEvaluator.evaluate(SPELVariableExpressionEvaluator.java:292) ~[thymeleaf-spring6-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at run.halo.app.theme.ReactiveSpelVariableExpressionEvaluator.evaluate(ReactiveSpelVariableExpressionEvaluator.java:29) ~[classes/:2.10.2]
                at org.thymeleaf.standard.expression.VariableExpression.executeVariableExpression(VariableExpression.java:166) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.standard.expression.SimpleExpression.executeSimple(SimpleExpression.java:66) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.standard.expression.Expression.execute(Expression.java:109) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.standard.expression.Expression.execute(Expression.java:138) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.standard.expression.Expression.execute(Expression.java:125) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.standard.processor.StandardWithTagProcessor.doProcess(StandardWithTagProcessor.java:93) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.engine.Model.process(Model.java:282) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.engine.ProcessorTemplateHandler.handleStandaloneElement(ProcessorTemplateHandler.java:1204) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.engine.StandaloneElementTag.beHandled(StandaloneElementTag.java:228) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.engine.Model.process(Model.java:282) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.engine.ProcessorTemplateHandler.handleStandaloneElement(ProcessorTemplateHandler.java:1204) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.engine.StandaloneElementTag.beHandled(StandaloneElementTag.java:228) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.engine.Model.process(Model.java:282) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1587) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.engine.TemplateModel.process(TemplateModel.java:136) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:592) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1103) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1077) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at org.thymeleaf.spring6.SpringWebFluxTemplateEngine.lambda$createFullStream$0(SpringWebFluxTemplateEngine.java:198) ~[thymeleaf-spring6-3.1.2.RELEASE.jar:3.1.2.RELEASE]
                at reactor.core.publisher.MonoCreate.subscribe(MonoCreate.java:58) ~[reactor-core-3.5.11.jar:3.5.11]
                at reactor.core.publisher.Mono.subscribe(Mono.java:4495) ~[reactor-core-3.5.11.jar:3.5.11]
                at reactor.core.publisher.MonoSubscribeOn$SubscribeOnSubscriber.run(MonoSubscribeOn.java:126) ~[reactor-core-3.5.11.jar:3.5.11]
                at reactor.core.scheduler.WorkerTask.call(WorkerTask.java:84) ~[reactor-core-3.5.11.jar:3.5.11]
                at reactor.core.scheduler.WorkerTask.call(WorkerTask.java:37) ~[reactor-core-3.5.11.jar:3.5.11]
                at java.base/java.util.concurrent.FutureTask.run(Unknown Source) ~[na:na]
                at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source) ~[na:na]
                at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[na:na]
                at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[na:na]
                at java.base/java.lang.Thread.run(Unknown Source) ~[na:na]
Caused by: java.lang.NullPointerException: Cannot invoke "run.halo.app.theme.finders.vo.ExtensionVoOperator.getMetadata()" because "extension" is null
        at run.halo.app.theme.dialect.expression.Annotations.getOrDefault(Annotations.java:44) ~[classes/:2.10.2]
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:na]
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:na]
        at java.base/java.lang.reflect.Method.invoke(Unknown Source) ~[na:na]
        at org.springframework.expression.spel.support.ReflectiveMethodExecutor.execute(ReflectiveMethodExecutor.java:139) ~[spring-expression-6.0.13.jar:6.0.13]
        at org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:124) ~[spring-expression-6.0.13.jar:6.0.13]
        at org.springframework.expression.spel.ast.MethodReference$MethodValueRef.getValue(MethodReference.java:398) ~[spring-expression-6.0.13.jar:6.0.13]
        at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:98) ~[spring-expression-6.0.13.jar:6.0.13]
        at org.springframework.expression.spel.ast.Ternary.getValueInternal(Ternary.java:59) ~[spring-expression-6.0.13.jar:6.0.13]
        at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:212) ~[spring-expression-6.0.13.jar:6.0.13]
        at org.springframework.expression.spel.ast.OpAnd.getBooleanValue(OpAnd.java:57) ~[spring-expression-6.0.13.jar:6.0.13]
        at org.springframework.expression.spel.ast.OpAnd.getValueInternal(OpAnd.java:48) ~[spring-expression-6.0.13.jar:6.0.13]
        at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:212) ~[spring-expression-6.0.13.jar:6.0.13]
        at org.springframework.expression.spel.ast.OpAnd.getBooleanValue(OpAnd.java:57) ~[spring-expression-6.0.13.jar:6.0.13]
        at org.springframework.expression.spel.ast.OpAnd.getValueInternal(OpAnd.java:48) ~[spring-expression-6.0.13.jar:6.0.13]
        at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:114) ~[spring-expression-6.0.13.jar:6.0.13]
        at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:338) ~[spring-expression-6.0.13.jar:6.0.13]
        at org.thymeleaf.spring6.expression.SPELVariableExpressionEvaluator.evaluate(SPELVariableExpressionEvaluator.java:265) ~[thymeleaf-spring6-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at run.halo.app.theme.ReactiveSpelVariableExpressionEvaluator.evaluate(ReactiveSpelVariableExpressionEvaluator.java:29) ~[classes/:2.10.2]
        at org.thymeleaf.standard.expression.VariableExpression.executeVariableExpression(VariableExpression.java:166) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.standard.expression.SimpleExpression.executeSimple(SimpleExpression.java:66) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.standard.expression.Expression.execute(Expression.java:109) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.standard.expression.Expression.execute(Expression.java:138) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.standard.expression.Expression.execute(Expression.java:125) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.standard.processor.StandardWithTagProcessor.doProcess(StandardWithTagProcessor.java:93) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.engine.Model.process(Model.java:282) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.engine.ProcessorTemplateHandler.handleStandaloneElement(ProcessorTemplateHandler.java:1204) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.engine.StandaloneElementTag.beHandled(StandaloneElementTag.java:228) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.engine.Model.process(Model.java:282) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.engine.ProcessorTemplateHandler.handleStandaloneElement(ProcessorTemplateHandler.java:1204) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.engine.StandaloneElementTag.beHandled(StandaloneElementTag.java:228) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.engine.Model.process(Model.java:282) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1587) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.engine.TemplateModel.process(TemplateModel.java:136) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:592) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1103) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1077) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.thymeleaf.spring6.SpringWebFluxTemplateEngine.lambda$createFullStream$0(SpringWebFluxTemplateEngine.java:198) ~[thymeleaf-spring6-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at reactor.core.publisher.MonoCreate.subscribe(MonoCreate.java:58) ~[reactor-core-3.5.11.jar:3.5.11]
        at reactor.core.publisher.Mono.subscribe(Mono.java:4495) ~[reactor-core-3.5.11.jar:3.5.11]
        at reactor.core.publisher.MonoSubscribeOn$SubscribeOnSubscriber.run(MonoSubscribeOn.java:126) ~[reactor-core-3.5.11.jar:3.5.11]
        at reactor.core.scheduler.WorkerTask.call(WorkerTask.java:84) ~[reactor-core-3.5.11.jar:3.5.11]
        at reactor.core.scheduler.WorkerTask.call(WorkerTask.java:37) ~[reactor-core-3.5.11.jar:3.5.11]
        at java.base/java.util.concurrent.FutureTask.run(Unknown Source) ~[na:na]
        at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source) ~[na:na]
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[na:na]
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[na:na]
        at java.base/java.lang.Thread.run(Unknown Source) ~[na:na]
shiayanga
从日志中看，可能是主题模板的问题。建议去主题仓库：https://github.com/LIlGG/halo-theme-sakura 反馈该问题。
/triage unresolved
JohnNiang
从日志中看，可能是主题模板的问题。建议去主题仓库：https://github.com/LIlGG/halo-theme-sakura 反馈该问题。
/triage unresolved
JohnNiang
从日志中看，可能是主题模板的问题。建议去主题仓库：https://github.com/LIlGG/halo-theme-sakura 反馈该问题。

/triage unresolved 应该不是模板的问题，换到halo官方提供的模板也是这个问题
shiayanga
Hi @shiayanga ，这说明默认主题 tags 模板也有问题。
默认主题出错的原因如下：https://github.com/halo-dev/theme-earth/blob/dd986ef328bc7a5231dba144091c4f2019442dbd/templates/tags.html#L11
JohnNiang
[halo-dev/halo]没有标签时，直接访问 /tags 系统报错

回答

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