Problem while building JavaFX fat jar in IntelliJ [duplicate]

I'm working on an application on JavaFX using IntelliJ and Gradle.

Everything seems to work fine while I'm running the app with Gradle's build. I'm planning to actually export it as a fat jar, in order for it to be used without the actual gradle build.

I also don't want to create an artifact using IntelliJ's wizard, because, as far as I know, it just creates it without any dependencies (didn't inform myself too well for that - but that's what I understood from their answers on the forums).

Getting back to building the fat jar with Gradle, this is how my project structure looks like:

My module-info.java looks like this:

module com.example.yuber { requires javafx.controls; requires javafx.fxml; requires javafx.web; requires org.controlsfx.controls; requires com.dlsc.formsfx; requires validatorfx; requires org.kordamp.ikonli.javafx; requires org.kordamp.bootstrapfx.core; requires eu.hansolo.tilesfx; requires org.json; requires com.fasterxml.jackson.core; requires com.fasterxml.jackson.databind; requires com.fasterxml.jackson.annotation; exports com.example.yuber; exports com.example.yuber.controllers; exports com.example.yuber.models; opens com.example.yuber to javafx.fxml; opens com.example.yuber.controllers to javafx.fxml; } 

(I needed to include all of these. Couldn't even use Jackson Databind after adding it as a Gradle dependency, before doing this step).

Also, the jar task from build.gradle looks like this:

jar { manifest { attributes 'Main-Class': 'com.example.yuber.Main' } from { configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) } } } 

But everytime I run the jar task from Gradle, I receive the following error:

Entry module-info.class is a duplicate but no duplicate handling strategy has been set. 

As found in this question, a solution would have been to just include duplicatesStrategy = DuplicatesStrategy.EXCLUDE in my jar task. Doing so indeed builds my jar file, although I can't running, and trying to gradle run my app doesn't do anything but display the error:

Process 'command 'C:\Users\matea\.jdks\corretto-11.0.15\bin\java.exe'' finished with non-zero exit value 1 

Also, running the created jar file with java -jar ... results in another error:

What I also found on this question was to actually mention the name of the modules inside the Add VM options setting in my Project Structure, like that:

--module-path "C:\Users\matea\.jdks\corretto-11.0.15\lib" --add-modules=javafx.controls,javafx.xml 

However, this also didn't seem to work. This is my project info:

Does anyone have any idea on why I can't create such a fat jar? Also, am I right by telling that a you can run such a fat jar using java -jar, without having JavaFX and the other modules separately installed?