* Fix error for Passing null to parameter of type string is deprecated.

module/mail/model.php

@@ -354,7 +354,7 @@ class mailModel extends model
         if($this->config->mail->mta == 'smtp') $this->mta->smtpClose();
 
         /* save errors. */
-        if($this->isError()) $this->app->saveError('E_MAIL', join(' ', $this->errors), __FILE__, __LINE__, true);
+        if($this->isError()) $this->app->saveError(E_WARNING, join(' ', $this->errors), __FILE__, __LINE__);
 
         $message = ob_get_contents();
         ob_end_clean();

module/story/control.php

@@ -299,7 +299,7 @@ class story extends control
             $product         = $this->product->getById(($productID and array_key_exists($productID, $products)) ? $productID : key($products));
             $productBranches = $product->type != 'normal' ? $this->loadModel('execution')->getBranchByProduct($productID, $objectID, 'noclosed|withMain') : array();
             $branches        = isset($productBranches[$productID]) ? $productBranches[$productID] : array();
-            $branch          = key($branches);
+            $branch          = (int)key($branches);
         }
         else
         {