DSTREAM ERROR(CMD16-TAD274-NAL23)

I  set the link address 0xffff000000080000, it repoort this err,

loadfile "D:\arm\01-code\my_lab\snake-os\snake-os.elf"
ERROR(CMD16-TAD274-NAL23):
! Failed to load "snake-os.elf"
! Failed to write 41,550 bytes to address EL2N:0xFFFF000000080000 while writing block of 4,096 bytes to address EL2N:0xFFFF000000080000
! Error accessing memory.