Laravel: _token value disappears after form submission. How to fix?

Question

Laravel

Good afternoon, dear developers. I would never post a question. Especially since he seems stupid to me. But I have already rummaged through the entire Toaster and the entire Internet.
Framework - laravel
The situation is as follows:
1. There is a form at post/add . It generates a hidden _token (using the Form:: facade or using the csrf_field() function - it doesn't matter) It looks like this:

<input name="_token" type="hidden" value="здесь токен">

2. The form is sent to the server (not Ajax, a simple PUT request)
3. The data is saved in the database and redirected to the same page. For example:
return redirect('post/add');
4. Everything is going well. But after going to the page, the form is generated without the value of the _token field. Like this: That is
<input name="_token" type="hidden">
, this form cannot be sent a second time. Before that, you need to go to the page again using the GET method.
Question: what am I doing wrong? How to fix it?

Answer 1

Yeah, the following was discovered by typing:
before making a redirect in the handler
There is such a code:
So, if you comment it out, then everything starts working. It turns out that this function somehow overlaps the token?
Can't delete my own question because I answered it myself.
The issue has been resolved. Apparently, working 18 hours in a row is harmful. Need to go to sleep. It turned out that there was a "flush" of all the values ​​​​before the form was displayed, so the token was not displayed.
Removed this piece of code and it all worked!