Cannot run JAR

[prodbybrudduh]

Error message when running from command prompt:
Exception in thread "main" java.lang.ExceptionInInitializerError
at com.deflatedpickle.faosdance.MainKt.main(main.kt:22)
at com.deflatedpickle.faosdance.MainKt.main(main.kt)
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field private java.lang.String java.net.URL.host accessible: module java.base does not "opens java.net" to unnamed module @17f6480
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357)
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:177)
at java.base/java.lang.reflect.Field.setAccessible(Field.java:171)
at khttp.requests.GenericRequest.toIDN(GenericRequest.kt:198)
at khttp.requests.GenericRequest.makeRoute(GenericRequest.kt:208)
at khttp.requests.GenericRequest.(GenericRequest.kt:132)
at khttp.KHttp.request(KHttp.kt:60)
at khttp.KHttp.get(KHttp.kt:30)
at khttp.KHttp.get$default(KHttp.kt:29)
at com.deflatedpickle.faosdance.autoupdate.UpdateUtil.(UpdateUtil.kt:10)
... 2 more