My (gr)avatar working fine on many tools but Jenkins hang with this issue:

2022-11-06 11:18:33.236+0000 [id=15]    WARNING h.ExpressionFactory2$JexlExpression#evaluate: Caught exception evaluating: h.getUserAvatar(user,'48x48') in /jenkins/user/jld/. Reason: java.lang.NullPointerException
java.lang.NullPointerException
        at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:889)
        at org.jenkinsci.plugins.gravatar.model.GravatarUser.gravatarUser(GravatarUser.java:30)
        at org.jenkinsci.plugins.gravatar.cache.GravatarImageResolutionLoadingCache.keyOf(GravatarImageResolutionLoadingCache.java:73)
        at org.jenkinsci.plugins.gravatar.cache.GravatarImageResolutionLoadingCache.hasGravatarCreator(GravatarImageResolutionLoadingCache.java:65)
        at org.jenkinsci.plugins.gravatar.cache.GravatarImageResolutionCacheInstance.hasGravatarCreator(GravatarImageResolutionCacheInstance.java:30)
        at org.jenkinsci.plugins.gravatar.UserGravatarResolver.isGravatarUser(UserGravatarResolver.java:60)
        at org.jenkinsci.plugins.gravatar.UserGravatarResolver.findAvatarFor(UserGravatarResolver.java:46)
        at hudson.tasks.UserAvatarResolver.resolveOrNull(UserAvatarResolver.java:101)
        at hudson.tasks.UserAvatarResolver.resolve(UserAvatarResolver.java:87)
        at hudson.Functions.getAvatar(Functions.java:2215)
        at hudson.Functions.getUserAvatar(Functions.java:2224)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.apache.commons.jexl.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:258)
        at org.apache.commons.jexl.parser.ASTMethod.execute(ASTMethod.java:104)
        at org.apache.commons.jexl.parser.ASTReference.execute(ASTReference.java:83)
        at org.apache.commons.jexl.parser.ASTReference.value(ASTReference.java:57)
        at org.apache.commons.jexl.parser.ASTReferenceExpression.value(ASTReferenceExpression.java:51)
        at org.apache.commons.jexl.ExpressionImpl.evaluate(ExpressionImpl.java:80)
        at hudson.ExpressionFactory2$JexlExpression.evaluate(ExpressionFactory2.java:76)
        at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:58)
        at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:101)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:101)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:101)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:265)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.core.CoreTagLibrary$1.run(CoreTagLibrary.java:98)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
        at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:122)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:101)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:265)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:101)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:101)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:101)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:101)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:101)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:265)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
        at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:122)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
        at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:122)
        at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
        at org.kohsuke.stapler.jelly.JellyViewScript.run(JellyViewScript.java:99)
        at org.kohsuke.stapler.jelly.DefaultScriptInvoker.invokeScript(DefaultScriptInvoker.java:66)
        at org.kohsuke.stapler.jelly.DefaultScriptInvoker.invokeScript(DefaultScriptInvoker.java:55)
        at org.kohsuke.stapler.jelly.ScriptInvoker.execute(ScriptInvoker.java:56)
        at org.kohsuke.stapler.jelly.ScriptInvoker.execute(ScriptInvoker.java:43)
        at org.kohsuke.stapler.Facet.handleIndexRequest(Facet.java:284)
        at org.kohsuke.stapler.jelly.JellyFacet.handleIndexRequest(JellyFacet.java:104)
        at org.kohsuke.stapler.IndexViewDispatcher.dispatch(IndexViewDispatcher.java:32)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:762)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:894)
        at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:289)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:59)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:762)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:894)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:690)
        at org.kohsuke.stapler.Stapler.service(Stapler.java:240)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:590)
        at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:764)
        at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1665)
        at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:157)
        at org.jenkinsci.plugins.ssegateway.Endpoint$SSEListenChannelFilter.doFilter(Endpoint.java:248)
        at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:154)
        at jenkins.security.ResourceDomainFilter.doFilter(ResourceDomainFilter.java:81)
        at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:154)
        at jenkins.telemetry.impl.UserLanguages$AcceptLanguageFilter.doFilter(UserLanguages.java:129)
        at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:154)
        at io.jenkins.blueocean.ResourceCacheControl.doFilter(ResourceCacheControl.java:134)
        at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:154)
        at io.jenkins.blueocean.auth.jwt.impl.JwtAuthenticationFilter.doFilter(JwtAuthenticationFilter.java:60)
        at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:154)
        at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:160)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
        at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:160)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:94)
        at jenkins.security.AcegiSecurityExceptionFilter.doFilter(AcegiSecurityExceptionFilter.java:52)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
        at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:54)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
        at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:122)
        at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:116)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
        at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:109)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
        at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:106)
        at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:97)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
        at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:223)
        at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:217)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
        at jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:97)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
        at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:112)
        at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:82)
        at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:63)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
        at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:111)
        at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:172)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
        at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:53)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
        at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:86)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
        at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
        at jenkins.security.SuspiciousRequestFilter.doFilter(SuspiciousRequestFilter.java:38)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:527)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:131)
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:549)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:223)
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1571)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1378)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:484)
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1544)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1300)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
        at org.eclipse.jetty.server.Server.handle(Server.java:562)
        at org.eclipse.jetty.server.HttpChannel.lambda$handle$0(HttpChannel.java:505)
        at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:762)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:497)
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:282)
        at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:319)
        at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)
        at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)
        at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:412)
        at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:381)
        at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:268)
        at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.lambda$new$0(AdaptiveExecutionStrategy.java:138)
        at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:407)
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:894)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1038)
        at java.base/java.lang.Thread.run(Thread.java:829)