STM32G030F6 Hardware serial not working

[fpgiovanini]

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To Reproduce
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[fpgiovanini]

STM32G030F6 Hardware serial not working or compilation error.
API : To use a second serial port, a HardwareSerial object should be declared in the sketch before the setup() function:
If you declare HardwareSerial Serial2 (COMPILATION ERROR).
((HardwareSerial.cpp.o):(.bss.Serial2+0x0): multiple definition of `Serial2'; C:\Users\fpgio\AppData\Local\Temp\arduino_build_439082\sketch\ASCIITable.ino.cpp.o:(.bss.Serial2+0x0): first defined here

To work you must change the names Serial and Serial2.
Serial2.println("Axxxxxxxxx"); is printing on Serial 1.
Arduino IDE 1.8.19. STM32DUINO LIBRARY GitHub release 2.12.0
tks