Error running static method

[hamzadahmani]

hello
application crash after running the server
using node v16
java 0.12.2

var cl = java.callStaticMethodSync("java.lang.ClassLoader","getSystemClassLoader")
^

Error: Error running static method
java.lang.NullPointerException
at java.base/java.util.Objects.requireNonNull(Objects.java:233)
at java.base/java.lang.invoke.MethodHandleImpl$1.reflectiveInvoker(MethodHandleImpl.java:1653)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:131)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)

at Array.async.auto.loadClass (C:\Users\21625\Desktop\********\node_modules\jasper-for-node\index.js:168:18)
at listener (C:\Users\21625\Desktop\********\node_modules\jasper-for-node\node_modules\async\lib\async.js:490:46)
at C:\Users\21625\Desktop\********\node_modules\jasper-for-node\node_modules\async\lib\async.js:441:17
at _each (C:\Users\21625\Desktop\********\node_modules\jasper-for-node\node_modules\async\lib\async.js:46:13)
at Immediate.taskComplete (C:\Users\21625\Desktop\********\node_modules\jasper-for-node\node_modules\async\lib\async.js:440:13)
at processImmediate (node:internal/timers:466:21) {

cause: nodeJava_java_lang_NullPointerException {}
}