Error after updating extensions

Hello community.

I have updated the LDAP extension (the one which displays the settings in the administration interface) and the JWPlayer extension.
Now my XWiki throws the following errors:

Error 4001

Error number 4001 in 4: Error while evaluating velocity template htmlheader.vm
com.xpn.xwiki.XWikiException: Error number 4001 in 4: Error while evaluating velocity template htmlheader.vm
at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2507)
at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:2480)
at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:983)
at jdk.internal.reflect.GeneratedMethodAccessor775.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:565)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:548)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:219)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:369)
at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:490)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:144)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:215)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:328)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:258)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:301)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:423)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:280)
at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:321)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:95)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:217)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:180)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:137)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:53)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:267)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:267)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:250)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:772)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:745)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:725)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:711)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:78)
at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2502)
at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:2480)
at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:983)
at jdk.internal.reflect.GeneratedMethodAccessor775.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:565)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:548)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:219)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:369)
at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:490)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:144)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:215)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:328)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:258)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:301)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:423)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:280)
at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:321)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:95)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:217)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:180)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:137)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:53)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:267)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:267)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:250)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:772)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:745)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:725)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:711)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:78)
at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2502)
at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:179)
at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:88)
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:670)
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:283)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:655)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at waffle.servlet.NegotiateSecurityFilter.doFilterPrincipal(NegotiateSecurityFilter.java:295)
at waffle.servlet.NegotiateSecurityFilter.doFilter(NegotiateSecurityFilter.java:157)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1726)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: org.xwiki.rendering.RenderingException: Failed to execute renderer
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:270)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:250)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:772)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:745)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:725)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:711)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:78)
at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2502)
… 126 more
Caused by: org.xwiki.rendering.RenderingException: Failed to evaluate template with id [/skins/flamingo/htmlheader.vm]
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:180)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:137)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:53)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:267)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:267)
… 134 more
Caused by: org.xwiki.velocity.XWikiVelocityException: Failed to evaluate content with namespace [/templates/exception.vm]
at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:288)
at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:321)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:95)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:217)
… 140 more
Caused by: org.apache.velocity.exception.MethodInvocationException: Invocation of method ‘url’ in class org.xwiki.rest.script.RESTScriptService threw exception java.lang.NullPointerException at /templates/exception.vm[line 52, column 63]
at org.apache.velocity.runtime.parser.node.ASTMethod.handleInvocationException(ASTMethod.java:306)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:233)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:369)
at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:701)
at org.apache.velocity.runtime.directive.VelocimacroProxy.handleArgValues(VelocimacroProxy.java:377)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:210)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:328)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:258)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:301)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:144)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:172)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:423)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:280)
… 143 more
Caused by: java.lang.NullPointerException
at org.xwiki.rest.script.RESTScriptService.url(RESTScriptService.java:89)
at org.xwiki.rest.script.RESTScriptService.url(RESTScriptService.java:73)
at jdk.internal.reflect.GeneratedMethodAccessor899.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:565)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:548)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:219)
… 156 more

Error 0

Error number 0 in 11: Uncaught exception
com.xpn.xwiki.XWikiException: Error number 0 in 11: Uncaught exception
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:616)
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:283)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:655)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at waffle.servlet.NegotiateSecurityFilter.doFilterPrincipal(NegotiateSecurityFilter.java:295)
at waffle.servlet.NegotiateSecurityFilter.doFilter(NegotiateSecurityFilter.java:157)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1726)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ExceptionInInitializerError
at org.xwiki.contrib.ldap.XWikiLDAPConnection.discoverLDAPService(XWikiLDAPConnection.java:307)
at org.xwiki.contrib.ldap.XWikiLDAPConnection.connect(XWikiLDAPConnection.java:254)
at org.xwiki.contrib.ldap.XWikiLDAPConnection.open(XWikiLDAPConnection.java:220)
at org.xwiki.contrib.ldap.XWikiLDAPConnection.open(XWikiLDAPConnection.java:162)
at org.xwiki.contrib.ldap.XWikiLDAPAuthServiceImpl.ldapAuthenticateInContext(XWikiLDAPAuthServiceImpl.java:557)
at org.xwiki.contrib.ldap.XWikiLDAPAuthServiceImpl.ldapAuthenticate(XWikiLDAPAuthServiceImpl.java:373)
at org.xwiki.contrib.ldap.XWikiLDAPAuthServiceImpl.checkAuthSSOSync(XWikiLDAPAuthServiceImpl.java:246)
at org.xwiki.contrib.ldap.XWikiLDAPAuthServiceImpl.checkAuthSSO(XWikiLDAPAuthServiceImpl.java:211)
at org.xwiki.contrib.ldap.XWikiLDAPAuthServiceImpl.checkAuth(XWikiLDAPAuthServiceImpl.java:163)
at com.xpn.xwiki.XWiki.checkAuth(XWiki.java:4308)
at org.xwiki.security.authorization.internal.XWikiCachingRightService.authenticateUser(XWikiCachingRightService.java:241)
at org.xwiki.security.authorization.internal.XWikiCachingRightService.checkAccess(XWikiCachingRightService.java:271)
at com.xpn.xwiki.XWiki.checkAccess(XWiki.java:4326)
at com.xpn.xwiki.XWiki.prepareDocuments(XWiki.java:5819)
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:497)
… 51 more
Caused by: java.lang.IllegalArgumentException: Invalid Structure field in class org.xbill.DNS.config.IPHlpAPI$IP_ADAPTER_ADDRESSES_LH, field name ‘NetworkGuid’ (class com.sun.jna.platform.win32.Guid$GUID): The type “com.sun.jna.platform.win32.Guid$GUID” is not supported: Native size for type “com.sun.jna.platform.win32.Guid$GUID” is unknown
at com.sun.jna.Structure.validateField(Structure.java:1246)
at com.sun.jna.Structure.validateFields(Structure.java:1255)
at com.sun.jna.Structure.(Structure.java:211)
at com.sun.jna.Structure.(Structure.java:204)
at com.sun.jna.Structure.(Structure.java:200)
at org.xbill.DNS.config.IPHlpAPI$IP_ADAPTER_ADDRESSES_LH.(IPHlpAPI.java:204)
at org.xbill.DNS.config.WindowsResolverConfigProvider$InnerWindowsResolverConfigProvider.initialize(WindowsResolverConfigProvider.java:79)
at org.xbill.DNS.config.WindowsResolverConfigProvider.initialize(WindowsResolverConfigProvider.java:118)
at org.xbill.DNS.ResolverConfig.(ResolverConfig.java:111)
at org.xbill.DNS.ResolverConfig.refresh(ResolverConfig.java:86)
at org.xbill.DNS.ResolverConfig.checkInitialized(ResolverConfig.java:59)
at org.xbill.DNS.ResolverConfig.getCurrentConfig(ResolverConfig.java:65)
at org.xbill.DNS.ExtendedResolver.(ExtendedResolver.java:180)
at org.xbill.DNS.Lookup.refreshDefault(Lookup.java:103)
at org.xbill.DNS.Lookup.(Lookup.java:111)
… 66 more
Caused by: java.lang.IllegalArgumentException: The type “com.sun.jna.platform.win32.Guid$GUID” is not supported: Native size for type “com.sun.jna.platform.win32.Guid$GUID” is unknown
at com.sun.jna.Native.getNativeSize(Native.java:1386)
at com.sun.jna.Structure.getNativeSize(Structure.java:2284)
at com.sun.jna.Structure.getNativeSize(Structure.java:2274)
at com.sun.jna.Structure.validateField(Structure.java:1242)
… 80 more

My XWiki version is about half a hear old (12.10.9) and the update to the new version is scheduled for Friday.
I wanted to get the extensions up to date before that^^
Is there an easy fix (like adding some setting to the config)?

BR
dahin

Edit:
those five extension folders have a “last modified” timestamp from today:
image

Very strange error, first time I see something like this. It might be related to the version of JNA in 12.10.9 which seems to be older than the one expected by a tool used by the LDAP authenticator. You might have more chance with more recent version of XWiki (like 13.10.5).

It seems to be triggered by the new LDAP discovery, would be great if you could create an issue for it on https://jira.xwiki.org/browse/LDAP with all the details you can give about your environment. In the meantime, you can disable this new feature with xwiki.authentication.ldap.service_discovery=0 in xwiki.cfg (see https://extensions.xwiki.org/xwiki/bin/view/Extension/LDAP/Authenticator/#HGenericLDAPconfiguration for more details).

Thank you for the fast (!) help.
Disabling the discovery solved the problem.

For participating in the JIRA, do have to create a new account or can I use this one somehow?

You will have to register an account, indeed.