JavaFX module does not export to unnamed module - gradle

Question

I am building a JavaFX application using gradle (with Kotlin and TornadoFX). Building and running it works fine with the below gradle build and IntelliJ but using the application plugin, and running the application, I get the following error:
Caused by: java.lang.IllegalAccessError: superinterface check failed: class de.codecentric.centerdevice.javafxsvg.SvgImageLoaderFactory (in
unnamed module #0x591c2277) cannot access class com.sun.javafx.iio.ImageLoaderFactory (in module javafx.graphics) because module javafx.gr
aphics does not export com.sun.javafx.iio to unnamed module #0x591c2277
Below is my gradle build script. How can I solve this.
plugins {
id 'org.jetbrains.kotlin.jvm' version '1.3.50'
id 'application'
id 'org.openjfx.javafxplugin' version '0.0.8'
}
application {
mainClassName = 'MainKt'
}
javafx {
version = "13"
modules = ['javafx.controls', 'javafx.base', 'javafx.graphics']
}
repositories {
mavenCentral()
mavenLocal()
jcenter()
maven {
url "https://plugins.gradle.org/m2/"
}
maven {
url "http://4thline.org/m2"
}
}
dependencies {
...
}
tasks.test {
useJUnitPlatform()
testLogging {
events("passed", "skipped", "failed")
}
}
compileKotlin {
kotlinOptions.jvmTarget = "1.8"
}
compileTestKotlin {
kotlinOptions.jvmTarget = "1.8"
}

Answer 1

Since I was working with a non-module project and was relying on JavaFX's modules, that is what caused the errors when I executed
> gradle run
I appended the following to my gradle file:
run {
applicationDefaultJvmArgs = ['--add-exports=javafx.graphics/com.sun.javafx.iio=ALL-UNNAMED',
'--add-exports=javafx.graphics/com.sun.javafx.iio.common=ALL-UNNAMED',
'--add-exports=javafx.graphics/com.sun.javafx.scene=ALL-UNNAMED',
'--add-exports=javafx.graphics/com.sun.glass.ui=ALL-UNNAMED',
]
jvmArgs = ['--add-exports=javafx.graphics/com.sun.javafx.iio=ALL-UNNAMED',
'--add-exports=javafx.graphics/com.sun.javafx.iio.common=ALL-UNNAMED',
'--add-exports=javafx.graphics/com.sun.javafx.scene=ALL-UNNAMED',
'--add-exports=javafx.graphics/com.sun.glass.ui=ALL-UNNAMED',
]
}
The reason the "applicationDefaultJvmArgs" is there is due to the fact that the application gradle plugin uses that to configure jvm arguments instead of "jvmArgs".