Merge 3c4ccdf into 1000210

SparkPost · Sep 18, 2020 · d2f4d69 · d2f4d69
2 parents 1000210 + 3c4ccdf
commit d2f4d69
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/sparkpost.class.php b/sparkpost.class.php
@@ -213,9 +213,9 @@ static function add_log($wp_mail_args, $content, $response)
         $content = json_decode($content);
 
         //get subject
-        if (property_exists($content->content, 'subject')) {
+        if (isset($content->content) && property_exists($content->content, 'subject')) {
             $subject = $content->content->subject;
-        } else {
+        } else if (isset($content->substitution_data) && property_exists($content->substitution_data, 'subject')) {
             $subject = $content->substitution_data->subject;
         }