Electron almost boots, but errors presumably due to a filesystem issue (missing folder?)

backend/main.js

@@ -0,0 +1,36 @@
+const { app, BrowserWindow } = require('electron');
+const path = require('path');
+const url = require('url');
+const server = require('./app');
+
+let win;
+
+function createWindow() {
+  win = new BrowserWindow({ width: 800, height: 600 });
+
+  // load the dist folder from Angular
+  win.loadURL('http://localhost:17442')  //ADD THIS
+
+  // The following is optional and will open the DevTools:
+  // win.webContents.openDevTools()
+
+  win.on('closed', () => {
+    win = null;
+  });
+}
+
+app.on('ready', createWindow);
+
+// on macOS, closing the window doesn't quit the app
+app.on('window-all-closed', () => {
+  if (process.platform !== 'darwin') {
+    app.quit();
+  }
+});
+
+// initialize the app's main window
+app.on('activate', () => {
+  if (win === null) {
+    createWindow();
+  }
+});