Only add the username property if it's not empty

Author: RVxLab

src/Notifications/Channels/Discord/DiscordMessage.php

@@ -114,8 +114,7 @@ public function fields(array $fields, bool $inline = true): self
 
     public function toArray(): array
     {
-        return [
-            'username' => $this->username ?? 'Laravel Backup',
+        $data = [
             'avatar_url' => $this->avatarUrl,
             'embeds' => [
                 [
@@ -132,5 +131,11 @@ public function toArray(): array
                 ],
             ],
         ];
+
+        if (!empty($this->username)) {
+            $data['username'] = $this->username;
+        }
+
+        return $data;
     }
 }