Problem with the DS18B20 temperature sensor (NUCLEO-F401RE board )

I just had a similar situation with an ESP32 and 2 one wire devices using a breadboard.

A search would show the codes:

  var ow = new OneWire(D23);
  var sensors = ow.search().map(function (device) {
    return require("DS18B20").connect(ow, device);
  });

=[
  {
    "bus": OneWire { "pin": D23 },
    "sCode": "28cc2e230500006b",
    "type": 28 },
  {
    "bus": OneWire { "pin": D23 },
    "sCode": "283260dc04000001",
    "type": 28 }
 ]

however - the reads failed. It turns out the pins were not seated properly - enough to get the ROM code, but not enough for a reading.

var model = {
  temp: [50,50]
};

function readTemps() {
   sensors.forEach(function (sensor, index) {
    model.temp[index]=sensor.getTemp();
    console.log(model);
  });
}