View file vendor/laravel/serializable-closure/src/Exceptions/InvalidSignatureException.php
<?php namespace Laravel\SerializableClosure\Exceptions; use Exception; class InvalidSignatureException extends Exception { /** * Create a new exception instance. * * @param string $message * @return void */ public function __construct($message = 'Your serialized closure might have been modified or it\'s unsafe to be unserialized.') { parent::__construct($message); } }