- Still WIP on Api's wrapper

src/QueryBuilder.php

@@ -278,7 +278,7 @@ class QueryBuilder implements Query\QueryBuilderInterface
         return $this;
     }
 
-    public function groupBy(string|\Stringable $field, ? string $direction = null) : self
+    public function groupBy(string|object $field, ? string $direction = null) : self
     {
         if ( null === $groupBy = $this->getFragment(Query\GroupBy::class) ) {
             $groupBy = new Query\GroupBy();