Laravel redirect::route is showing a message between page loads

Question

I\'m currently developing a web app using Laravel, and the app was working perfectly fine until recently. I had no idea what triggered it but here\'s a summary of the issue

Answer 1

In my app the problem was caused by a cast to string:

public function myAction(): string {
   return redirect('/');
}

I had to remove : string to prevent the response from being cast to a string.