On our current production server we run 1.609 with Java 1.6. It is very very old but it's not my decision to upgrade it, it's the Dev Team's. This version and this Java are indeed compatible, Jenkins runs fine on our current server.
I therefore need to revert to 1.6 anything that has, inadvertently, gone to 1.8. Please help me with that. To start with, am I running into 1.8 plugins, or 1.8 artifacts? Some sites suggest that this is a browser/Javascript issue. I'm at a loss. On Monday, July 12, 2021 at 7:25:52 PM UTC+3 kuisat...@gmail.com wrote: > "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 old and with tons of issues resolved in the latest version on an outdated 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, bob...@gmail.com > 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 jenkinsci-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/f92df8ed-428e-458f-aaac-f7c2623cb93bn%40googlegroups.com.
