Internal Device Is Not Working After SmartServer 4.0 Upgrade

If a SmartServer internal device stops working after upgrading to SmartServer 4.0 or higher, then consider the following:

1. For SmartServer 4.0 and higher, supervisorctl is replaced with smartserverctl. For SmartServer 3.6 and prior, supervisorctl is used.
   
   

2. Update any scripts or code that use supervisorctl to use smartserverctl instead (the format has changed for some commands); create unit files.