The module name specified in 'application.mainModule' (null) has not the expected value (hellofx) [closed]

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Running the JavaFX project with the run function in Gradle works fine,

but using the jpackage function in Gradle does not work properly.

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An error occurs while executing the jpackage function:

12:56:41 AM: Executing task 'jpackage'...


> Configure project :
Project : => 'hellofx' Java module

> Task :compileJava
> Task :processResources
> Task :classes
> Task :jar
> Task :prepareMergedJarsDir
> Task :createMergedModule
> Task :createDelegatingModules
> Task :prepareModulesDir

> Task :jlink
The module name specified in 'application.mainModule' (null) has not the expected value (hellofx).

> Task :jpackageImage
The module name specified in 'application.mainModule' (null) has not the expected value (hellofx).
WARNING: Using incubator modules: jdk.incubator.jpackage

> Task :jpackage
The module name specified in 'application.mainModule' (null) has not the expected value (hellofx).
WARNING: Using incubator modules: jdk.incubator.jpackage
WARNING: Using incubator modules: jdk.incubator.jpackage

BUILD SUCCESSFUL in 1m 41s
10 actionable tasks: 10 executed
12:58:23 AM: Task execution finished 'jpackage'.

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JavaFX Gradle project repository: https://github.com/AlexNature1/JavaFXGradle

来源：https://stackoverflow.com/questions/63106837/the-module-name-specified-in-application-mainmodule-null-has-not-the-expecte