type fixes

application/Espo/Controllers/EmailTemplate.php

@@ -29,6 +29,8 @@
 
 namespace Espo\Controllers;
 
+use Espo\Core\Exceptions\BadRequest;
+
 use Espo\Services\EmailTemplate as Service;
 
 use Espo\Core\{
@@ -44,6 +46,10 @@ class EmailTemplate extends Record
     {
         $id = $request->getQueryParam('id');
 
+        if ($id === null) {
+            throw new BadRequest("No `id`.");
+        }
+
         return (object) $this->getEmailTempalteService()->parse(
             $id,
             [