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Error while creating EntityManagerFactory

I'm making a Java application using JavaFX and Hibernate and when creating EntityManagerFactory this error pops out:
Exception in thread "main" java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.ExceptionInInitializerError
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
... 5 more
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: Transport] Unable to build Hibernate SessionFactory
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException(EntityManagerFactoryBuilderImpl.java:1495)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1415)
at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:56)
at java.persistence#2.2/javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:79)
at java.persistence#2.2/javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:54)
at org.application/org.application.App.<clinit>(App.java:19)
... 11 more
Caused by: org.hibernate.MappingException: Could not get constructor for org.hibernate.persister.entity.SingleTableEntityPersister
at org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:123)
at org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:77)
at org.hibernate.metamodel.internal.MetamodelImpl.initialize(MetamodelImpl.java:181)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:312)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:471)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1410)
... 15 more
Caused by: org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:91)
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructDefaultTuplizer(EntityTuplizerFactory.java:116)
at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:432)
at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:612)
at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:126)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:96)
... 20 more
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:88)
... 29 more
Caused by: java.lang.IllegalArgumentException: Could not create type
at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:155)
at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:175)
at org.hibernate.bytecode.internal.bytebuddy.ByteBuddyState.load(ByteBuddyState.java:178)
at org.hibernate.bytecode.internal.bytebuddy.ByteBuddyState.loadProxy(ByteBuddyState.java:102)
at org.hibernate.proxy.pojo.bytebuddy.ByteBuddyProxyHelper.buildProxy(ByteBuddyProxyHelper.java:55)
at org.hibernate.proxy.pojo.bytebuddy.ByteBuddyProxyFactory.postInstantiate(ByteBuddyProxyFactory.java:61)
at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:102)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:160)
at org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:53)
... 34 more
Caused by: java.lang.IllegalStateException: java.lang.IllegalAccessError: superinterface check failed: class org.application.Przystanki$HibernateProxy$sCX2Dgdo (in module org.application) cannot access class org.hibernate.proxy.ProxyConfiguration (in unnamed module #0x56e9a474) because module org.application does not read unnamed module #0x56e9a474
at net.bytebuddy.dynamic.loading.ClassInjector$UsingLookup.injectRaw(ClassInjector.java:1624)
at net.bytebuddy.dynamic.loading.ClassInjector$AbstractBase.inject(ClassInjector.java:114)
at net.bytebuddy.dynamic.loading.ClassLoadingStrategy$UsingLookup.load(ClassLoadingStrategy.java:492)
at net.bytebuddy.dynamic.TypeResolutionStrategy$Passive.initialize(TypeResolutionStrategy.java:100)
at net.bytebuddy.dynamic.DynamicType$Default$Unloaded.load(DynamicType.java:6154)
at org.hibernate.bytecode.internal.bytebuddy.ByteBuddyState.lambda$load$0(ByteBuddyState.java:182)
at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:153)
... 42 more
Caused by: java.lang.IllegalAccessError: superinterface check failed: class org.application.Przystanki$HibernateProxy$sCX2Dgdo (in module org.application) cannot access class org.hibernate.proxy.ProxyConfiguration (in unnamed module #0x56e9a474) because module org.application does not read unnamed module #0x56e9a474
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.System$2.defineClass(System.java:2127)
at java.base/java.lang.invoke.MethodHandles$Lookup.defineClass(MethodHandles.java:962)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at net.bytebuddy.dynamic.loading.ClassInjector$UsingLookup.injectRaw(ClassInjector.java:1622)
... 48 more
I believe it showed up after an IDE update.
None of this happens when all the classes run wild and free without any packages and modules but thats what JavaFX needs so there they are.
I've spent a day or so searching for answers or clues but I have no idea how to fix it. I am a total newbie in all of this and would really appreciate any help.

From stack trace, I assuming that you are using Java modules and your error is probably related with incorrect modules configuration in your package-info.java file.
Caused by: java.lang.IllegalAccessError: superinterface check failed: class org.application.Przystanki$HibernateProxy$sCX2Dgdo (in module org.application) cannot access class org.hibernate.proxy.ProxyConfiguration (in unnamed module #0x56e9a474) because module org.application does not read unnamed module #0x56e9a474
In module org.application, please add in module-info.java:
requires org.hibernate.orm.core;

NoClassDefFoundError when trying to register a listener to an EventBus (Google Guava)

In a project for college we have to implement participants which can exchange messages via a channel. This channel has to be realised as a EventBus (Guava).
When I'm trying to register a listener (part1) to the eventbus (channel):
channel.register(part1);
the following Exception appears in the console.
Exception in thread "main" java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.NoClassDefFoundError: com/google/common/util/concurrent/internal/InternalFutureFailureAccess
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1095)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:206)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:759)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassInModuleOrNull(BuiltinClassLoader.java:680)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:605)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:579)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1095)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:206)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:759)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassInModuleOrNull(BuiltinClassLoader.java:680)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:605)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:579)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1095)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:206)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:759)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassInModuleOrNull(BuiltinClassLoader.java:680)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:605)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:579)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at com.google.common/com.google.common.cache.LocalCache$LoadingValueReference.<init>(LocalCache.java:3472)
at com.google.common/com.google.common.cache.LocalCache$LoadingValueReference.<init>(LocalCache.java:3476)
at com.google.common/com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2134)
at com.google.common/com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2045)
at com.google.common/com.google.common.cache.LocalCache.get(LocalCache.java:3951)
at com.google.common/com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3974)
at com.google.common/com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4958)
at com.google.common/com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:4964)
at com.google.common/com.google.common.eventbus.SubscriberRegistry.getAnnotatedMethods(SubscriberRegistry.java:173)
at com.google.common/com.google.common.eventbus.SubscriberRegistry.findAllSubscribers(SubscriberRegistry.java:164)
at com.google.common/com.google.common.eventbus.SubscriberRegistry.register(SubscriberRegistry.java:74)
at com.google.common/com.google.common.eventbus.EventBus.register(EventBus.java:186)
at commands.Commands.createChannel(Commands.java:243)
at persistence.HSQLDB.resetDatabase(HSQLDB.java:482)
at gui.GUI.start(GUI.java:101)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run$$$capture(InvokeLaterDispatcher.java:96)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java)
at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
... 1 more
Caused by: java.lang.ClassNotFoundException: com.google.common.util.concurrent.internal.InternalFutureFailureAccess
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
... 55 more
Can anyone help me?
The guava.jar is added as a library. It has to be something with the implementation of the jar and the ClassLoader.

Guava has one real dependency that is needed at runtime: com.google.guava:failureaccess.
You'll need to download that jar and put it on your classpath, too.
(As Onur Baştürk suggests, this happens automatically with some build tools.)

JavaFX: creating a Media Object causes java.lang.reflect.InvocationTargetException Error

I'm currently working on a simple game and I'm trying to implement sound with JavaFX and I get a java.lang.reflect.InvocationTargetException error when creating a Media object.
I have tried:
Media media = new Media("file:sounds/test.mp3");
Media media = new Media(new File("file:sound/test.mp3").toURI().toString());
and also both with the complete file path on my PC.
This is the error I'm getting:
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:830)
Caused by: java.lang.NoClassDefFoundError: javafx/scene/media/Media
at application.Main.start(Main.java:14)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
... 1 more
Caused by: java.lang.ClassNotFoundException: javafx.scene.media.Media
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
... 10 more
Exception running application application.Main```

The error message says NoClassDefFoundError: javafx/scene/media/Media which means that it is not finding the Media classes.
The solution is to add vm arguments to your project.
Right click project > Run As > Run configurations ...
Click on Arguments and paste the following in vm arguments:
--module-path "/path/to/javafx-sdk/lib" --add-modules javafx.media
Depending on your project, you may have to add javafx.controls and javafx.fxml as well.
--module-path "/path/to/javafx-sdk/lib" --add-modules javafx.controls,javafx.fxml,javafx.media
Replace /path/to/javafx-sdk/lib with the actual path of the lib folder in your system.

Have a problem with testing projects (java.lang.reflect.invocationtargetexception)

As the Title says. These is a project from my uni and i dont know how to solve the error. I appreciate your help and thanks in advance
sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
Testcase: PrintingLikeBossTest: Caused an ERROR
java.lang.reflect.InvocationTargetException
org.objenesis.ObjenesisException: java.lang.reflect.InvocationTargetException
at org.objenesis.instantiator.sun.SunReflectionFactoryHelper.newConstructorForSerialization(SunReflectionFactoryHelper.java:55)
at org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator.<init>(SunReflectionFactoryInstantiator.java:38)
at org.objenesis.strategy.StdInstantiatorStrategy.newInstantiatorOf(StdInstantiatorStrategy.java:58)
at org.objenesis.ObjenesisBase.getInstantiatorOf(ObjenesisBase.java:91)
at org.powermock.reflect.internal.WhiteboxImpl.newInstance(WhiteboxImpl.java:228)
at org.powermock.reflect.Whitebox.newInstance(Whitebox.java:139)
at org.powermock.modules.junit4.rule.PowerMockClassloaderExecutor.registerProxyframework(PowerMockClassloaderExecutor.java:72)
at org.powermock.modules.junit4.rule.PowerMockClassloaderExecutor.forClass(PowerMockClassloaderExecutor.java:50)
at org.powermock.modules.junit4.rule.PowerMockRule.apply(PowerMockRule.java:31)
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at org.objenesis.instantiator.sun.SunReflectionFactoryHelper.newConstructorForSerialization(SunReflectionFactoryHelper.java:45)
Caused by: java.lang.IllegalAccessError: class jdk.internal.reflect.ConstructorAccessorImpl loaded by org.powermock.core.classloader.MockClassLoader #100fc185 cannot access jdk/internal/reflect superclass jdk.internal.reflect.MagicAccessorImpl
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1017)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:878)
at org.powermock.core.classloader.MockClassLoader.loadUnmockedClass(MockClassLoader.java:229)
at org.powermock.core.classloader.MockClassLoader.loadModifiedClass(MockClassLoader.java:179)
at org.powermock.core.classloader.DeferSupportingClassLoader.loadClass(DeferSupportingClassLoader.java:68)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1017)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:878)
at org.powermock.core.classloader.MockClassLoader.loadUnmockedClass(MockClassLoader.java:229)
at org.powermock.core.classloader.MockClassLoader.loadModifiedClass(MockClassLoader.java:179)
at org.powermock.core.classloader.DeferSupportingClassLoader.loadClass(DeferSupportingClassLoader.java:68)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.System$2.defineClass(System.java:2196)
at java.base/jdk.internal.reflect.ClassDefiner.defineClass(ClassDefiner.java:65)
at java.base/jdk.internal.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:400)
at java.base/jdk.internal.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:394)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:312)
at java.base/jdk.internal.reflect.MethodAccessorGenerator.generate(MethodAccessorGenerator.java:393)
at java.base/jdk.internal.reflect.MethodAccessorGenerator.generateSerializationConstructor(MethodAccessorGenerator.java:112)
at java.base/jdk.internal.reflect.ReflectionFactory.generateConstructor(ReflectionFactory.java:462)
at java.base/jdk.internal.reflect.ReflectionFactory.newConstructorForSerialization(ReflectionFactory.java:375)

Could you please provide more details. The question is really vague and it does not provide information about the context.
Is your code available somewhere?
Are you using a build tool like maven or gradle?

Getting a runtime error when trying to use Media to play audio in javafx

I am trying to have my JavaFX load and play a wav file, but its not working. This is the code I have:
String mainThemeFile = "audio\\finale.wav";
Media mainTheme = new Media(new File(mainThemeFile).toURI().toString());
MediaPlayer mainThemePlayer = new MediaPlayer(mainTheme);
mainThemePlayer.play();
finale.wav is located in another file in the src named audio. Running my program causes this error:
Exception in Application start method
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.IllegalAccessError: class com.sun.media.jfxmediaimpl.NativeMediaManager (in unnamed module #0x4f49f616) cannot access class com.sun.glass.utils.NativeLibLoader (in module javafx.graphics) because module javafx.graphics does not export com.sun.glass.utils to unnamed module #0x4f49f616
at com.sun.media.jfxmediaimpl.NativeMediaManager.lambda$new$0(NativeMediaManager.java:110)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at com.sun.media.jfxmediaimpl.NativeMediaManager.<init>(NativeMediaManager.java:107)
at com.sun.media.jfxmediaimpl.NativeMediaManager$NativeMediaManagerInitializer.<clinit>(NativeMediaManager.java:78)
at com.sun.media.jfxmediaimpl.NativeMediaManager.getDefaultInstance(NativeMediaManager.java:90)
at com.sun.media.jfxmedia.MediaManager.canPlayProtocol(MediaManager.java:78)
at com.sun.media.jfxmedia.locator.Locator.<init>(Locator.java:239)
at javafx.scene.media.Media.<init>(Media.java:393)
at GameDriver.start(GameDriver.java:54)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
... 1 more
Exception running application GameDriver
Any help would be greatly appreciated