Failed to upgrade extension

Installed XWiki 4.5.2 with deb package some days ago. Including the workspace manager and wiki manager. Everything was running fine. Today there was the release of xwiki 4.5.3.

• i upgraded via aptitude
• upgraded several parts in the distribution manager (xwiki enterprise ui all; XWiki Platform - Workspace - Template Features)
• during the upgrade of the workspace application and the wiki application the distribution manager aborted with an error "exception thrown during job execution"

<code>
class org.xwiki.extension.InstallException: Failed to upgrade from extension [org.xwiki.platform:xwiki-platform-application-manager-api-4.5.1] to extension [org.xwiki.platform:xwiki-platform-application-manager-api-4.5.3] at org.xwiki.extension.handler.internal.DefaultExtensionHandlerManager.upgrade(DefaultExtensionHandlerManager.java:121) at org.xwiki.extension.job.internal.AbstractExtensionJob.installExtension(AbstractExtensionJob.java:189) at org.xwiki.extension.job.internal.AbstractExtensionJob.applyAction(AbstractExtensionJob.java:138) at org.xwiki.extension.job.internal.AbstractExtensionJob.applyActions(AbstractExtensionJob.java:91) at org.xwiki.extension.job.internal.InstallJob.start(InstallJob.java:143) at org.xwiki.job.AbstractJob.start(AbstractJob.java:134) at org.xwiki.job.internal.DefaultJobManager.run(DefaultJobManager.java:155) at java.lang.Thread.run(Thread.java:636) Caused by: class java.lang.NullPointerException: null at org.xwiki.extension.jar.internal.handler.JarExtensionHandler.uninstall(JarExtensionHandler.java:108) at org.xwiki.extension.handler.internal.AbstractExtensionHandler.upgrade(AbstractExtensionHandler.java:63) at org.xwiki.extension.handler.internal.DefaultExtensionHandlerManager.upgrade(DefaultExtensionHandlerManager.java:117) at org.xwiki.extension.job.internal.AbstractExtensionJob.installExtension(AbstractExtensionJob.java:189) at org.xwiki.extension.job.internal.AbstractExtensionJob.applyAction(AbstractExtensionJob.java:138) at org.xwiki.extension.job.internal.AbstractExtensionJob.applyActions(AbstractExtensionJob.java:91) at org.xwiki.extension.job.internal.InstallJob.start(InstallJob.java:143) at org.xwiki.job.AbstractJob.start(AbstractJob.java:134) at org.xwiki.job.internal.DefaultJobManager.run(DefaultJobManager.java:155) at java.lang.Thread.run(Thread.java:636)
</code>