Update app.js

app.js

@@ -8,7 +8,7 @@ import fetch from 'node-fetch';
 import sharp from 'sharp';
 import { spawn } from 'child_process';
 import path from 'path';
-import { NodeVM } from "vm2";
+import { VM } from "vm2";
 
 import EventEmitter from 'events';
 import WebSocket from 'ws';