archi: jArchi renderViewAsBase64 throws OutOfMemoryError (Java 11.0.5 doesn't allocate heap)

Version of Archi

Archi-Win64-4.7.0-beta1

Archi Plug-ins

jArchi plugin version 0.7.2.20200228

Operating System

Windows 10

Steps to Reproduce the Behaviour

Rendering a .png image with a scale of 2 or larger throws a

java.lang.OutOfMemoryError: Java heap space.

This happens with the new Archi 4.7.0 beta1 version, no problem with the 4.6 version

1. Select a view with quite a lot of visual elements (a small view with 10 or less elements just worked)
2. Run this script

view = selection.filter("archimate-diagram-model").first();
try {

	if (!view) {
		window.alert("Please select a view");
	} else {
		console.log("View is: " + view.name);
		let filename = view.name
		let file = window.promptSaveFile({
			title: "Save to file",
			fileName: filename
		});
		let fileExtension = "PNG"

		for (let scale = 1; scale < 5; scale++) {

			var bytes = $.model.renderViewAsBase64(view, fileExtension, {
				scale: scale,
				margin: scale * 10
			});
			fileWithScale = file + "_" + scale + "." + fileExtension
			console.log("Saved to: " + fileWithScale);
			$.fs.writeFile(fileWithScale, bytes, "BASE64");
		}

	}
}
catch (error) {
	console.log(`${typeof error.stack == 'undefined' ? error : error.stack}`);
}

1. The error occurs in the call $.model.renderViewAsBase64.