org.mockito.exceptions.misusing.NotAMockException: Argument should be a mock, but is: class java.lang.Class

I know this has been asked before but my case seems quite unique, I just upgraded to JDK 11 on one of my android projects, as a result, had to update Mockito and PowermMckito as well. Since then I'm facing this problem.

Argument should be a mock, but is: class java.lang.Class
org.mockito.exceptions.misusing.NotAMockException: Argument should be a mock, but is: class java.lang.Class
    at LogUtils.logException(LogUtils.java:84)
    at PushNotificationUtilsTest.setUp(PushNotificationUtilsTest.kt:23)
    at org.junit.internal.runners.MethodRoadie.runBefores(MethodRoadie.java:133)
    at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:96)
    at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:87)
    at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:50)
    at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:34)
    at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:44)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:110)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
    at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:62)
    at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
    at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
    at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
    at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:121)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
    at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:182)
    at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:164)
    at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:414)
    at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
    at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
    at java.base/java.lang.Thread.run(Thread.java:834)

LogUtils is a class with static methods.

public final class LogUtils {
    
    private LogUtils() {
    }

 
    public static void logException(Throwable throwable) {
        if (BuildConfig.DEBUG) {
            throwable.printStackTrace();
        }

        FirebaseCrashlytics.getInstance().recordException(throwable);
    }

}

On the setup method.

@RunWith(PowerMockRunner::class)
@PrepareForTest(LogUtils::class)
class PushNotificationUtilsTest {

    @Before
    fun setUp() {
        PowerMockito.spy(LogUtils::class.java)
        PowerMockito.doNothing().`when`(LogUtils::class.java, "logException", any())
    }

    @Test
    fun isOneSignalNotification_withoutCustomKey() {
        val data = HashMap<String, String>()

        val result = PushNotificationUtils.isOneSignalNotification(data)

        assertThat(result).isFalse()
    }

    @Test
    fun isOneSignalNotification_withCustomKey() {
        val data = HashMap<String, String>()
        data["custom"] = "How's the josh?"

        val result = PushNotificationUtils.isOneSignalNotification(data)

        assertThat(result).isTrue()
    }

    @Test
    fun hasCorrectOneSignalPayload_withIncorrectPayload() {
        val data = HashMap<String, String>()
        data["custom"] = "{\"a\":{\"message\":{\"data\":{}}}}"

        val result = PushNotificationUtils.hasCorrectOneSignalPayload(data)

        assertThat(result).isFalse()
    }

    @Test
    fun hasCorrectOneSignalPayload_withCorrectPayload() {
        val data = HashMap<String, String>()
        data["custom"] = "{\"a\":{\"data\":{\"data\":{}}}}"

        val result = PushNotificationUtils.hasCorrectOneSignalPayload(data)

        assertThat(result).isTrue()
    }

    @Test
    fun getOneSignalData() {
        val data = HashMap<String, String>()
        data["custom"] = "{\"a\":{\"data\":{}}}"

        val result = PushNotificationUtils.getOneSignalPayload(data)

        val expectedData = JsonObject()
        assertThat(result).isEqualTo(expectedData)
    }
}

I remotely have no idea what the error is and how to fix it, tried all the StackOverflow questions and Github issues.