Compilation error to non included RTC file

[HoangYenTran01]

/Documents/Arduino/libraries/STM32duinoLoRaWAN/src/STM32CubeWL/Utilities/timer/stm32_timer.h:60:10: fatal error: rtc.h: No such file or directory
60 | #include "rtc.h"
| ^~~~~~~
compilation terminated.
exit status 1

Compilation error: exit status 1

Hii I tried to run the script and I ran into this problem. May I ask how can I tackle thiws

[fpistm]

Simply install the stm32duino RTC library. It is a dependency of the STM32 LoRaWAN library.

[HoangYenTran01]

Thankss! I was able to solve the issue. However, I seems to run into another one. Do you have any ideas to fix this
It seems liken the PC3,4,5 is said to be non declared. Is it because I am using the incompatible model., Mind is RAK3172
Documents\Arduino\libraries\STM32duinoLoRaWAN\src\BSP\radio_board_if.c:75:33: error: 'PC3' undeclared here (not in a function); did you mean 'PC_3'?
75 | #define LORAWAN_RFSWITCH_PINS PC3,PC4,PC5
Documents\Arduino\libraries\STM32duinoLoRaWAN\src\BSP\radio_board_if.c:84:70: note: in expansion of macro 'LORAWAN_RFSWITCH_PINS'
84 | static unsigned lorawan_rfswitch_pins[LORAWAN_RFSWITCH_PIN_COUNT] = {LORAWAN_RFSWITCH_PINS};

Documents\Arduino\libraries\STM32duinoLoRaWAN\src\BSP\radio_board_if.c:75:37: error: 'PC4' undeclared here (not in a function); did you mean 'PC_4'?
75 | #define LORAWAN_RFSWITCH_PINS PC3,PC4,PC5