Longan Nano Won't Compile

Compiling .pio\build\sipeed-longan-nano\src\Source_Combined_ER_GD32_Node.o
In file included from src\Source_Combined_ER_GD32_Node.c:32:
C:\Users\xman.platformio\packages\framework-gd32vf103-sdk\GD32VF103_standard_peripheral/gd32vf103.h:179:41: error: expected ‘;’, identifier or ‘(’ before ‘_Bool’
179 | typedef enum {FALSE = 0, TRUE = !FALSE} bool;
| ^~~~
*** [.pio\build\sipeed-longan-nano\src\Source_Combined_ER_GD32_Node.o] Error 1

What should I do?