fixed headless-browser.js getting stuck on background when closing

main.js

@@ -68,6 +68,7 @@ function createWindow() {
 
   mainWindow.loadFile('views/index.html');
   mainWindow.setMenu(null);
+  mainWindow.on('closed', () => { headlessBrowser.forceKill(); });
 }
 
 app.whenReady().then(() => {

src/utils/headless-browser.js

@@ -176,6 +176,22 @@ class HeadlessBrowser {
     `;
     await win.webContents.executeJavaScript(script);
   }
+
+  forceKill() {
+    try {
+      if (this.win && !this.win.isDestroyed()) {
+        const wc = this.win.webContents;
+
+        try { wc.stop(); } catch (_) {}
+        try { wc.close(); } catch (_) {}
+        try { wc.destroy(); } catch (_) {}
+
+        this.win.destroy();
+      }
+    } catch (_) {}
+
+    this.win = null;
+  }
 }
 
 module.exports = new HeadlessBrowser();