How to handle exceptions displayed when post submits data

When post submits data, it displays as follows:

The page has expired due to inactivity. 
Please refresh and try again

This is due to this requirement in the laravel framework: any HTML form that points to the POST, PUT or DELETE route in the web Requests should all contain a CSRF token, otherwise, the request will be rejected.

eg：

<form method="POST" action="/profile">
{{ csrf_field() }}    ...</form>

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