"Unsupported major.minor version 52.0" means that you need to run on Java 8 (see https://stackoverflow.com/questions/10382929/how-to-fix-java-lang-unsupportedclassversionerror-unsupported-major-minor-versi/ )
the Java 6 version you are using is EOL since 2013 (see https://en.wikipedia.org/wiki/Java_version_history) and your Jenkins version was released in 2015 (see https://www.jenkins.io/changelog-stable/#v1.609.3) so I don't know if that version can run on Java 6, I dunno why you are trying to use something old and with tons of issues resolved in the latest version on an outdated and without support Java version, but sounds like a no-good idea. El lunes, 12 de julio de 2021 a las 16:33:20 UTC+2, [email protected] escribió: > Let me add that the system property java.class.version on both servers > new (source and copy) has the value 50.0 > > So it seems I need to get rid of all 52.0 stuff. > > > > On Monday, July 12, 2021 at 4:30:53 PM UTC+3 GI D wrote: > >> On a copied installation of Jenkins 1.609 to a new server, I notice that >> when I select a build and click "configure", I get a greyed-out config page >> with "LOADING" as a watermark that never goes away. At the same time I see >> in catalina.out lots of errors such as this: >> >> Jul 12, 2021 4:15:20 PM hudson.ExpressionFactory2$JexlExpression evaluate >> WARNING: Caught exception evaluating: d.helpFile in >> /jenkins/job/platform%20set%20branch%20name/configure. Reason: jav >> a.lang.reflect.InvocationTargetException >> .... >> .... >> Caused by: java.lang.UnsupportedClassVersionError: >> org/jenkinsci/plugins/scriptsecurity/sandbox/RejectedAccessException : >> Unsupported major.minor version 52.0 >> >> I think the reason is that, for a few days, I was running the new Jenkins >> with a slightly newer Java version (1.6.0_41 rather than 1.6.0_30). Now I >> have made sure I run it with _30. During this short period this particular >> build has been executed a few times. However I do get the same problem on >> other builds that have not executed on this new server. >> >> Almost all errors (or warnings if you will) are about the script-security >> plugin. >> >> Please advise. >> >> - George >> >> -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/71dedddd-8fbb-4176-a45c-cc2782ec000en%40googlegroups.com.
