working on a laravel project, Cookie and session stopped setting on client's browser in production but work on localhost. every form submission is not getting to controller and returned 419 page expired. it was woking perfectly before and suddenly it start showing 419 error. any help is highly appreciated.
.env
SESSION_DRIVER=database
SESSION_LIFETIME=120
SESSION_ENCRYPT=false
SESSION_PATH=/
SESSION_DOMAIN=.mydomain.com
SESSION_SECURE_COOKIE=true
The html form
<form method="POST" action="/question">
@csrf
<input type="text" name="first_question">
<button type="submit"> SIGN IN </button>
</form>