I'm using the node 14 version am facing a conversion error in the spawn child process.
var args = [
"/tmp/1633000412878/firstFrame.png",
"/tmp/1633000412878/lastFrame.png",
"(",
"./masks/fade.png",
"-evaluate",
"add",
"0%",
")",
"-composite",
"-size",
"1024x576",
`enter code here`,
"rgba:-",
];
var ls = spawn("convert", args);
ls.stderr.on("data", function (data) {
console.log("stderr: " + data);
});