FreeRTSO实验21-1 FreeRTOS+EMWIN移植实验编译报错怎么回事

购买了FreeRTSO这书，在“STM32F767 FreeRTOS例程V1.1”中“FreeRTSO实验21-1 FreeRTOS+EMWIN移植实验”这个程序编译报错：
linking...
..OBJLED.axf: Error: L6200E: Symbol MemManage_Handler multiply defined (by mpu.o and stm32f7xx_it.o).
Not enough information to list image symbols.
Not enough information to list the image map.
Finished: 2 information, 0 warning and 1 error messages.
"..OBJLED.axf" - 1 Error(s), 0 Warning(s).
Target not created.
Build Time Elapsed:  00:01:52
请教下老师这个问题怎么解决。