Java version warning when using jbundler

[JasonDuckworth]

Hi,

I'm trying to use jbundler and I have noticed that when I run jbundle update I get this warning:

unsupported Java version "11", defaulting to 1.7

Can this be updated to use java 11 and later?

Also I don't know if this is related but I'm getting this error when running the same command:

sh: 1: cd: can't cd to uri:classloader:/

Any suggestions on how to fix this would be gratefully appreciated.