Ubuntu 19.10 - 'an illegal reflective access operation has occurred' about boot

[ieure]

I had the same issue. It's a known BC break in Java 10.

My problem was that I upgraded to Java 11, but there were old .jars sitting around in ~/.boot. The Java upgrade breaks Boot entirely, including its ability to update itself to a version that would work.

Solution: rm -rf ~/.boot and rerun boot.sh.

[pjgoodall]

None of the functionality works AFAIK
boot -h, boot repl etc

at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at Boot.main(Boot.java:257)
Caused by: java.lang.ExceptionInInitializerError
        at dynapath.defaults__init.load(Unknown Source)
        at dynapath.defaults__init.<clinit>(Unknown Source)
        at java.base/java.lang.Class.forName0(Native Method)
        at java.base/java.lang.Class.forName(Class.java:398)
        at clojure.lang.RT.loadClassForName(RT.java:2093)
        at clojure.lang.RT.load(RT.java:430)
        at clojure.lang.RT.load(RT.java:411)
        at clojure.core$load$fn__5066.invoke(core.clj:5641)
        at clojure.core$load.doInvoke(core.clj:5640)
        at clojure.lang.RestFn.invoke(RestFn.java:408)
        at clojure.core$load_one.invoke(core.clj:5446)
        at clojure.core$load_lib$fn__5015.invoke(core.clj:5486)
        at clojure.core$load_lib.doInvoke(core.clj:5485)
        at clojure.lang.RestFn.applyTo(RestFn.java:142)
        at clojure.core$apply.invoke(core.clj:626)
        at clojure.core$load_libs.doInvoke(core.clj:5524)
        at clojure.lang.RestFn.applyTo(RestFn.java:137)
        at clojure.core$apply.invoke(core.clj:626)
        at clojure.core$require.doInvoke(core.clj:5607)
        at clojure.lang.RestFn.invoke(RestFn.java:421)
        at dynapath.util$loading__4958__auto__.invoke(util.clj:1)
        at dynapath.util__init.load(Unknown Source)
        at dynapath.util__init.<clinit>(Unknown Source)
        at java.base/java.lang.Class.forName0(Native Method)
        at java.base/java.lang.Class.forName(Class.java:398)
        at clojure.lang.RT.loadClassForName(RT.java:2093)
        at clojure.lang.RT.load(RT.java:430)
        at clojure.lang.RT.load(RT.java:411)
        at clojure.core$load$fn__5066.invoke(core.clj:5641)
        at clojure.core$load.doInvoke(core.clj:5640)
        at clojure.lang.RestFn.invoke(RestFn.java:408)
        at clojure.core$load_one.invoke(core.clj:5446)
        at clojure.core$load_lib$fn__5015.invoke(core.clj:5486)
        at clojure.core$load_lib.doInvoke(core.clj:5485)
        at clojure.lang.RestFn.applyTo(RestFn.java:142)
        at clojure.core$apply.invoke(core.clj:626)
        at clojure.core$load_libs.doInvoke(core.clj:5524)
        at clojure.lang.RestFn.applyTo(RestFn.java:137)
        at clojure.core$apply.invoke(core.clj:626)
        at clojure.core$require.doInvoke(core.clj:5607)
        at clojure.lang.RestFn.invoke(RestFn.java:805)
        at boot.pod$loading__4958__auto__.invoke(pod.clj:1)
        at boot.pod__init.load(Unknown Source)
        at boot.pod__init.<clinit>(Unknown Source)
        at java.base/java.lang.Class.forName0(Native Method)
        at java.base/java.lang.Class.forName(Class.java:398)
        at clojure.lang.RT.loadClassForName(RT.java:2093)
        at clojure.lang.RT.load(RT.java:430)
        at clojure.lang.RT.load(RT.java:411)
        at clojure.core$load$fn__5066.invoke(core.clj:5641)
        at clojure.core$load.doInvoke(core.clj:5640)
        at clojure.lang.RestFn.invoke(RestFn.java:408)
        at clojure.core$load_one.invoke(core.clj:5446)
        at clojure.core$load_lib$fn__5015.invoke(core.clj:5486)
        at clojure.core$load_lib.doInvoke(core.clj:5485)
        at clojure.lang.RestFn.applyTo(RestFn.java:142)
        at clojure.core$apply.invoke(core.clj:626)
        at clojure.core$load_libs.doInvoke(core.clj:5524)
        at clojure.lang.RestFn.applyTo(RestFn.java:137)
        at clojure.core$apply.invoke(core.clj:626)
        at clojure.core$require.doInvoke(core.clj:5607)
        at clojure.lang.RestFn.invoke(RestFn.java:408)
        at clojure.lang.Var.invoke(Var.java:379)
        at org.projectodd.shimdandy.impl.ClojureRuntimeShimImpl.require(ClojureRuntimeShimImpl.java:78)
        at boot.App.newShim(App.java:320)
        at boot.App.aetherShim(App.java:346)
        at boot.App.seedCache(App.java:261)
        at boot.App.readCache(App.java:300)
        at boot.App.main(App.java:480)
        ... 5 more
Caused by: java.lang.ClassNotFoundException: sun.misc.Launcher$ExtClassLoader
        at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:471)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:588)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
        at java.base/java.lang.Class.forName0(Native Method)
        at java.base/java.lang.Class.forName(Class.java:315)
        at dynapath.defaults$fn__830.<clinit>(defaults.clj:12)
        ... 74 more
(base) 
```q