IntelliJ, .jar executable not behaving properly "java.lang.reflect.InvocationTargetException"

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I have a JavaFX program that I need to make executable. I'm currently trying to do it with IntelliJ IDEA, it does create the .jar, but when I try to click on a clickable item that should pop a window it doesn't and instead in the console it prints this error:

Screenshot of the error I get

If it can be helpful this is a screenshot of the internal structure of the project + whats inside the manifest

I should also specify that I imported the javaFX library in Project Structure -> Artifacts.

(I already made a .jar executable for another project and worked fine there, but it didn't had any pop-up windows nor multiple .fxml / controllers... so I think that might be whats making it crash, but I'm not sure)

Edit: Also I forgot to say that the problem i reported above only happens in the .jar, if i debug the program/run it through the IDE it works perfectly fine.

Edit (Error code copy-pasted):

    Dec 30, 2021 6:51:43 PM javafx.fxml.FXMLLoader$ValueElement processValue
WARNING: Loading FXML document with JavaFX API of version 16 by JavaFX runtime of version 11.0.2
java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0
Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
        at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1787)
        at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1670)
        at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
        at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
        at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
        at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
        at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
        at javafx.event.Event.fireEvent(Event.java:198)
        at javafx.scene.Scene$ClickGenerator.postProcess(Scene.java:3564)
        at javafx.scene.Scene$ClickGenerator.access$8200(Scene.java:3492)
        at javafx.scene.Scene$MouseHandler.process(Scene.java:3860)
        at javafx.scene.Scene$MouseHandler.access$1200(Scene.java:3579)
        at javafx.scene.Scene.processMouseEvent(Scene.java:1849)
        at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2588)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:397)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$2(GlassViewEventHandler.java:434)
        at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:390)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:433)
        at com.sun.glass.ui.View.handleMouseEvent(View.java:556)
        at com.sun.glass.ui.View.notifyMouse(View.java:942)
        at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
        at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.reflect.InvocationTargetException
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:568)
        at com.sun.javafx.reflect.Trampoline.invoke(MethodUtil.java:76)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:568)
        at com.sun.javafx.reflect.MethodUtil.invoke(MethodUtil.java:273)
        at com.sun.javafx.fxml.MethodHelper.invoke(MethodHelper.java:83)
        at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1782)
        ... 31 more
Caused by: java.lang.IllegalStateException: Location is not set.
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2459)
        at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2435)
        at Controllers.Home.LWELencoClick(Home.java:521)
        ... 43 more


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