STM32 products are nothing but problems ... ;(
It seems some header files in your project are missing, say stm32f4xx_hal_pwr_ex.h, stm32f4xx_hal_rcc.h for example. you may read CubeMX user guide (UM1718 User manual) before using it. There is no shorcut to use CubeMX properly without reading CubeMX user guide.