Upgrading through apt-get now can't find karaf.kar.core:jar?

01:44:20.222 [WARN ] [url.mvn.internal.AetherBasedResolver] - Error resolving artifactorg.apache.karaf.kar:org.apache.karaf.kar.core:jar:4.0.4:Could not find artifact org.apache.karaf.kar:org.apache.karaf.kar.core:jar:4.0.4
shaded.org.eclipse.aether.resolution.ArtifactResolutionException: Could not find artifact org.apache.karaf.kar:org.apache.karaf.kar.core:jar:4.0.4
at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:444)[4:org.ops4j.pax.url.mvn:2.4.5]
at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:246)[4:org.ops4j.pax.url.mvn:2.4.5]
at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:223)[4:org.ops4j.pax.url.mvn:2.4.5]
at shaded.org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveArtifact(DefaultRepositorySystem.java:294)[4:org.ops4j.pax.url.mvn:2.4.5]
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:615)[4:org.ops4j.pax.url.mvn:2.4.5]
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:570)[4:org.ops4j.pax.url.mvn:2.4.5]
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:548)[4:org.ops4j.pax.url.mvn:2.4.5]
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:523)[4:org.ops4j.pax.url.mvn:2.4.5]
at org.apache.karaf.features.internal.download.impl.MavenDownloadTask.download(MavenDownloadTask.java:34)[9:org.apache.karaf.features.core:4.0.4]
at org.apache.karaf.features.internal.download.impl.AbstractRetryableDownloadTask.run(AbstractRetryableDownloadTask.java:58)[9:org.apache.karaf.features.core:4.0.4]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)[:1.8.0_101]
at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_101]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)[:1.8.0_101]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)[:1.8.0_101]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0_101]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0_101]
at java.lang.Thread.run(Thread.java:745)[:1.8.0_101]
Caused by: shaded.org.eclipse.aether.transfer.ArtifactNotFoundException: Could not find artifact org.apache.karaf.kar:org.apache.karaf.kar.core:jar:4.0.4
at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:434)[4:org.ops4j.pax.url.mvn:2.4.5]
… 16 more