external loader file not found

I am using the STM32F429I board using the stmcubeIDE i tried to load the program via st-link but it got ended with the above program.
After that i tried the alternate steps by loading the external loader but i cant find the (.stldr) file in the external loader file list i have attached the image below in that image the (.stldr) file for the stm32f429i was not found.

I need some help to tackle this problem. kindly respond to this if any of you find the solutions.

