[Compile Error when compiling (ugfx_demo_001/ugfx_virtual_keyboard)]

Hi I am totally new to uGFX so in order to learn i downloaded  ugfx_demo_001, ugfx_demo_002/and ugfx_demo_003. Example Projects .

for Keil MDK5  

 

However when i try to compile the demo examples i get the same error as below for all three examples  .

C:\Keil_v5\ARM\PACK\Keil\STM32F7xx_DFP\2.9.0\Drivers\STM32F7xx_HAL_Driver\Src\stm32f7xx_hal_rcc_ex.c(251): error:  #20: identifier "LSE_STARTUP_TIMEOUT" is undefined

I am not sure if i have done something wrong or there is another issue .

Has any one else encountered the same problem ?

Can any one please help me with this error .

Many Thanks in advance 

 

 

 

 

ugfx_demo_001.zip