While working on Issue #63 I noticed the sensor menu disappeared when the sensors command output anything to stderr.
Actually the stderr stream was not read at all, which somehow prevented the stdout from being read, and the lack of output caused the menu to panic and display an error instead (as if lm_sensors was not installed or sensors-detect had not been run).
I think it better to read stderr for the commands, and if present log it to the system log and include something in the menu to indicate there was an error, but still continue to display whatever sensor data is available.
MisterGuinness
commented
2 years ago 
While working on Issue #63 I noticed the sensor menu disappeared when the sensors command output anything to stderr.
Actually the stderr stream was not read at all, which somehow prevented the stdout from being read, and the lack of output caused the menu to panic and display an error instead (as if lm_sensors was not installed or sensors-detect had not been run).
I think it better to read stderr for the commands, and if present log it to the system log and include something in the menu to indicate there was an error, but still continue to display whatever sensor data is available.