Failed to load skybox `EnvironmentResource` inside Swift Playgrounds App

Using Swift
1

Hello.

I've been trying to load a skybox asset using RealityKit inside the Swift Playgrounds App. Since loading a resource file using Swift Playgrounds App requires a bit of hacking inside the Package.swift file, I've modify some configuration inside the Package() class.

Package.swift Configurations 
targets: [
    .executableTarget(
        name: "AppModule",
        path: ".",
        resources: [.copy("Assets/")]
    )
],

I've also use this, just in case.

targets: [
    .executableTarget(
        name: "AppModule",
        path: ".",
        resources: [.process("Assets/")]
    )
],

Running the app causes runtime error and outputs a resourceLoadFailure error shown below.

Task 2: Fatal error: 'try!' expression unexpectedly raised an error: RealityKit.EnvironmentResource.(unknown context at $238b95db0).LoadError.resourceLoadFailure("Assets/DaySkyHDRI003B_4K_HDR.skybox")

I've also tried this solution from StackOverflow but no result. Are there any workarounds or is this some limitation that Swift Playgrounds has?