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

Thank you very much for your suggestion!
For me it is correct to investigate in this direction (in the past I have never experienced any issue related to "poverty" of the power supply contacts).
For information, using the "native" implementation and the same board \ connections, the temperature sensor also works at 5V without problems (even with Arduino the 5V is OK).
With Espruino instead I get the same failure unfortunately:

Temp is null°C
Temp is null°C
Temp is null°C

I hope to give the first results as soon as possible ...
Stay tuned!

Regards