No such file or directory

Hello to everyone.
I'm new to this forum. With the Keil program
I want to print temperature and humidity information to the LCD screen on the STM32F103VET card.
So I found an lcd library on the internet.

h. files to the "Drivers / STM32F1xx_HAL_Driver / Inc" path in the project I created. and I saved the c. files in the "Drivers / STM32F1xx_HAL_Driver / Src" path and then opened my project and added it to the "Application / User / Core" section.

but the program gives me the following error:

Build started: Project: final_project
*** Using Compiler 'V5.06 update 7 (build 960)', folder: 'C:\Keil_v5\ARM\ARMCC\Bin'
Build target 'final_project'
compiling ssd1289_fsmc.c...
C:\Users\sedanur\Downloads\ssd1289_stm32f103VET6_example\ssd1289_stm32f103VET6_example\ssd1289_fsmc.h(4): error: #5: cannot open source input file "stm32f10x_gpio.h": No such file or directory
#include "stm32f10x_gpio.h"
C:\Users\sedanur\Downloads\ssd1289_stm32f103VET6_example\ssd1289_stm32f103VET6_example\ssd1289_fsmc.c: 0 warnings, 1 error
"final_project\final_project.axf" - 1 Error(s), 0 Warning(s).
Target not created.
Build Time Elapsed: 00:00:00

Can someone explain the cause of the problem to me please?

thank you.

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