Update error.php

framework/views/errorHandler/error.php

 <?php
 /**
- * @var \yii\base\Exception $exception
+ * @var \Exception|\yii\base\Exception $exception
  * @var \yii\web\ErrorHandler $handler
  */
 if ($exception instanceof \yii\web\HttpException) {
@@ -93,4 +93,4 @@ if (method_exists($this, 'beginPage')) {
 <?php
 if (method_exists($this, 'endPage')) {
     $this->endPage();
-}
\ No newline at end of file
+}