neercsys can you post your php flarum info? I really cant riproduce this bug.
Also i have the extension installed with queue but I have no errors.
@luceos there's a chance that this is caused by Blomstra/redis?, i appreciate if you can help me with this. Because i followed the documentation for Notification, so i'm correclty using NotificationSyncer interface.
@neercsys meanwhile, please try
1.3.1
i've installed queue inside my local environment but i can't find the issue (all works fine), if someone have an idea please share php flarum info so i could find the culprit