I recently upgraded to Latest version of jenkins.
After this process i facing this error
“java.lang.NoClassDefFoundError: org/jruby/javasupport/proxy/InternalJavaProxy”
can’t see from the error message, but at least one of your plugins is using the old runtimes that are no longer supported.
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Hi @halkeye
I can’t able to even login
Shall i delete these plugin from jenkin’s plugin folder.
is enough for delete these plugin’s folder only or need delete .jpi and .bak files also ?
I’d recommend deleteing the jpi file at the very least, but folder and bak are probably good ideas.
Once they are deleted, restart
if you are getting the same error as the original screenshot, it means you have plugins that are using jruby. Take a look at the blog post, see if it lists any plugins you are using, and remove them.
Otherwise remove all plugins, and add back the ones you are using.
I upgraded from 2.346 to 2.387 (also upgraded from jdk8 to jdk11) and got the same error.
After deleting plugins’ own folder and .jpi files of “gitlab hook” and “ruby-runtime” plugins, It works.
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