Is it impossible to redirect back or to another route with POST method request?

Have you try this?

PHP Code:

return redirect()->back()->withInput()->with('errors', $this->validator->getErrors()); 


Can you show what your tried and what version of CI, 3 or 4?

I've tried this method with a slightly different code. but the 404 File not Found error always appears. Because I'm doing a redirect from the PUT request routes back to the route with POST request.

My Code : 

PHP Code:

$validation = \Config\Services::validation():
return redirect()->back()->withInput()->with('validation', $validation);