Fix findUnique issues

src/Repository/OrganisationApprovalRepository.php

@@ -29,7 +29,7 @@ class OrganisationApprovalRepository extends BasicTokenRepository
      */
     protected function updateTokenOwner($owner_id, $model, $args)
     {
-        $organisation = $this->classMapper->getClassMapping('organisation')::findUnique($owner_id, 'id', false);
+        $organisation = $this->classMapper->getClassMapping('organisation')::where('id', $owner_id)->first();
 
         if (!$organisation) {
             return false;