fix getting and assigning the id of the created domain

server/queries/domain.queries.js

@@ -51,9 +51,8 @@ async function add(params) {
       });
   } else {
     // Mysql and sqlite don't support returning but return the inserted id by default
-    [id] = await knex("domains")
-      .insert(newDomain)
-      .returning("id");
+    const [createdDomain] = await knex("domains").insert(newDomain).returning("id");
+    id = createdDomain.id;
   }
 
   // Query domain instead of using returning as sqlite and mysql don't support it