diff --git a/src/Element/AbstractElement.php b/src/Element/AbstractElement.php
index 4d227ce..c39d15c 100644
--- a/src/Element/AbstractElement.php
+++ b/src/Element/AbstractElement.php
@@ -124,7 +124,7 @@ public function getId(): string
     }
 
     /**
-     * Get live arg by name
+     * Get live arg by name if exists
      *
      * @param string $name
      * @return mixed|null
@@ -132,7 +132,7 @@ public function getId(): string
     public function getArgByName(string $name)
     {
         $args = $this->getArgs();
-        return $args[$name];
+        return $args[$name] ?? null;
     }
 
     /**