php cs fixes

src/Bundle/ChillDocGeneratorBundle/Service/Generator/GeneratorException.php

@@ -1,18 +1,33 @@
 <?php
 
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
 namespace Chill\DocGeneratorBundle\Service\Generator;
 
-class GeneratorException extends \RuntimeException
+use RuntimeException;
+use Throwable;
+
+class GeneratorException extends RuntimeException
 {
     /**
      * @var list<string>
      */
     private array $errors;
 
-    public function __construct(array $errors = [], \Throwable $previous = null)
+    public function __construct(array $errors = [], ?Throwable $previous = null)
     {
         $this->errors = $errors;
-        parent::__construct("Could not generate the document", 15252,
-            $previous);
+        parent::__construct(
+            'Could not generate the document',
+            15252,
+            $previous
+        );
     }
 }