diff --git a/src/Node/Block/Table.php b/src/Node/Block/Table.php
index 21e3351..58ea820 100644
--- a/src/Node/Block/Table.php
+++ b/src/Node/Block/Table.php
@@ -47,10 +47,9 @@ public function __construct(string $layout = 'default', bool $isNumberColumnEnab
 
     public static function load(array $data, ?BlockNode $parent = null): self
     {
-        self::checkNodeData(static::class, $data, ['attrs']);
-        self::checkRequiredKeys(['layout', 'isNumberColumnEnabled'], $data['attrs']);
+        self::checkNodeData(static::class, $data);
 
-        $node = new self($data['attrs']['layout'], (bool) $data['attrs']['isNumberColumnEnabled'], $data['attrs']['localId'] ?? null, $parent);
+        $node = new self($data['attrs']['layout'] ?? self::LAYOUT_DEFAULT, (bool) $data['attrs']['isNumberColumnEnabled'] ?? false, $data['attrs']['localId'] ?? null, $parent);
 
         // set content if defined
         if (\array_key_exists('content', $data)) {
diff --git a/src/Node/Inline/Mention.php b/src/Node/Inline/Mention.php
index e88a1f0..421ce69 100644
--- a/src/Node/Inline/Mention.php
+++ b/src/Node/Inline/Mention.php
@@ -58,11 +58,11 @@ public function __construct(string $id, string $text, ?string $accessLevel = nul
     public static function load(array $data, ?BlockNode $parent = null): self
     {
         self::checkNodeData(static::class, $data);
-        self::checkRequiredKeys(['id', 'text'], $data['attrs']);
+        self::checkRequiredKeys(['id'], $data['attrs']);
 
         return new self(
             $data['attrs']['id'],
-            $data['attrs']['text'],
+            $data['attrs']['text'] ?? '',
             $data['attrs']['accessLevel'] ?? null,
             $data['attrs']['userType'] ?? null
         );