runApp function
Add an Error Handler right at the start.
Implementation
void runApp(m.Widget app) {
// Instantiate the app's error handler.
c.AppErrorHandler();
// Here we set the URL strategy for our web app.
// It is safe to call this function when running on mobile or desktop as well.
setPathUrlStrategy();
// Since Flutter 3.10, must now run in the 'root' zone
m.runApp(app);
}