diff --git a/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php b/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php
index 557a36b90448..147eaed57954 100644
--- a/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php
+++ b/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php
@@ -1200,7 +1200,7 @@ protected function asJson($value)
      */
     public function fromJson($value, $asObject = false)
     {
-        return json_decode($value, ! $asObject);
+        return json_decode($value ?? '', ! $asObject);
     }
 
     /**