No person sensor results found on the i2c bus

[baqwas]

Arduino IDE is connected to a Sparkfun RedBoard that is connected to Person Sensor.

Can run basic Arduino sketches on the board.

Cannot run person_sensor_arduino.ino successfully. The Person Sensor on-board status LED blinks dutifully when connected via Qwiic connector to RedBoard but no detection results reported via Serial Monitor.

Probably some newbie operator/user error but what is the resolution for this self-inflicted issue? Thanks.

The output from a vanilla I2C scanner sketch:

21:14:43.391 -> I2C Scanner
21:14:43.391 -> Scanning...
21:14:43.391 -> I2C device found at address 0x39  !
21:14:43.456 -> I2C device found at address 0x4F  !
21:14:43.490 -> I2C device found at address 0x62  !
21:14:43.522 -> I2C device found at address 0x79  !
21:14:43.553 -> done