it’s bug ? Nexus OSS 3.41.1-01 the server is frozen. the only thing that helped me was restarting the service
2023-07-28 16:13:28,836+0200 ERROR [FelixDispatchQueue] *SYSTEM Events.Framework - FrameworkEvent ERROR
java.lang.NoClassDefFoundError: org/apache/karaf/specs/locator/OsgiLocator
at org.apache.karaf.specs.activator.Activator.register(Activator.java:125)
at org.apache.karaf.specs.activator.Activator.bundleChanged(Activator.java:97)
at org.apache.felix.framework.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:915)
at org.apache.felix.framework.EventDispatcher.fireEventImmediately(EventDispatcher.java:834)
at org.apache.felix.framework.EventDispatcher.fireBundleEvent(EventDispatcher.java:516)
at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4817)
at org.apache.felix.framework.StatefulResolver.fireResolvedEvents(StatefulResolver.java:1300)
at org.apache.felix.framework.StatefulResolver.resolve(StatefulResolver.java:512)
at org.apache.felix.framework.Felix.resolveBundleRevision(Felix.java:4363)
at org.apache.felix.framework.Felix.startBundle(Felix.java:2281)
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998)
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:984)
at org.sonatype.nexus.features.internal.FeaturesWrapper.startBundle(FeaturesWrapper.java:262)
at java.util.ArrayList.forEach(ArrayList.java:1259)
at org.sonatype.nexus.features.internal.FeaturesWrapper.fastInstallFeature(FeaturesWrapper.java:185)
at org.sonatype.nexus.features.internal.FeaturesWrapper.invoke(FeaturesWrapper.java:129)
at com.sun.proxy.$Proxy1.installFeatures(Unknown Source)
at org.sonatype.nexus.bootstrap.osgi.BootstrapListener.installNexusEdition(BootstrapListener.java:333)
at org.sonatype.nexus.bootstrap.osgi.BootstrapListener.contextInitialized(BootstrapListener.java:135)
at org.eclipse.jetty.server.handler.ContextHandler.callContextInitialized(ContextHandler.java:1067)
at org.eclipse.jetty.servlet.ServletContextHandler.callContextInitialized(ServletContextHandler.java:572)
at org.eclipse.jetty.server.handler.ContextHandler.contextInitialized(ContextHandler.java:996)
at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:746)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:379)
at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1449)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1414)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:910)
at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:288)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:524)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:169)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:110)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:97)
at com.codahale.metrics.jetty9.InstrumentedHandler.doStart(InstrumentedHandler.java:101)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:169)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:117)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:97)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:169)
at org.eclipse.jetty.server.Server.start(Server.java:423)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:110)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:97)
at org.eclipse.jetty.server.Server.doStart(Server.java:387)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at org.sonatype.nexus.bootstrap.jetty.JettyServer$JettyMainThread.run(JettyServer.java:274)
2023-07-28 16:13:36,612+0200 ERROR [FelixDispatchQueue] *SYSTEM Events.Framework - FrameworkEvent ERROR
java.lang.NoClassDefFoundError: org/apache/karaf/specs/locator/OsgiLocator
at org.apache.karaf.specs.activator.Activator.register(Activator.java:125)
at org.apache.karaf.specs.activator.Activator.bundleChanged(Activator.java:97)
at org.apache.felix.framework.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:915)
at org.apache.felix.framework.EventDispatcher.fireEventImmediately(EventDispatcher.java:834)
at org.apache.felix.framework.EventDispatcher.fireBundleEvent(EventDispatcher.java:516)
at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4817)
at org.apache.felix.framework.StatefulResolver.fireResolvedEvents(StatefulResolver.java:1300)
at org.apache.felix.framework.StatefulResolver.resolve(StatefulResolver.java:512)
at org.apache.felix.framework.Felix.resolveBundleRevision(Felix.java:4363)
at org.apache.felix.framework.Felix.startBundle(Felix.java:2281)
at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1539)
at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
at java.lang.Thread.run(Thread.java:750)
2023-07-28 16:13:36,617+0200 ERROR [FelixStartLevel] *SYSTEM Felix - Bundle org.apache.felix.framework [0] EventDispatcher: Error during dispatch. (java.lang.NoClassDefFoundError: org/apache/karaf/specs/locator/OsgiLocator)
java.lang.NoClassDefFoundError: org/apache/karaf/specs/locator/OsgiLocator
at org.apache.karaf.specs.activator.Activator.register(Activator.java:125)
at org.apache.karaf.specs.activator.Activator.bundleChanged(Activator.java:97)
at org.apache.felix.framework.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:915)
at org.apache.felix.framework.EventDispatcher.fireEventImmediately(EventDispatcher.java:834)
at org.apache.felix.framework.EventDispatcher.fireBundleEvent(EventDispatcher.java:516)
at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4817)
at org.apache.felix.framework.StatefulResolver.fireResolvedEvents(StatefulResolver.java:1300)
at org.apache.felix.framework.StatefulResolver.resolve(StatefulResolver.java:512)
at org.apache.felix.framework.Felix.resolveBundleRevision(Felix.java:4363)
at org.apache.felix.framework.Felix.startBundle(Felix.java:2281)
at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1539)
at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
at java.lang.Thread.run(Thread.java:750)