Troubleshooting your Pixelfed installation

Horizon is not working

This means that your permissions are wrong somewhere. Make sure that you have run php artisan horizon as a user that has access to both your repo and to Redis.

Horizon seems to be working, but it's still showing as inactive.

Run either php artisan package:discover or composer install, then run php artisan horizon:install and php artisan horizon:assets then php artisan route:cache. Restart your systemd service or restart Horizon. It should now show as active.