Protect against DeviceAttribute without .value
DeviceAttribute is not providing .value in some cases. This has been seen using PyTango 9.3.0 when trying to read empty spectrums.
Protect against DeviceAttribute not providing .value.
DeviceAttribute is not providing .value in some cases. This has been seen using PyTango 9.3.0 when trying to read empty spectrums.
Protect against DeviceAttribute not providing .value.