java.lang.NullPointerException: Cannot invoke "com.fasterxml.jackson.databind.JsonNode.asBoolean()" because the return value of "com.fasterxml.jackson.databind.JsonNode.get(String)" is null
	at org.keycloak.testsuite.oauth.TokenIntrospectionTest.testUnsupportedToken(TokenIntrospectionTest.java:313)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
...