efi stub: ERROR: Failed to load initrd

[axeprpr]

my boot.ipxe

#!ipxe
set webserver http://192.168.132.130:5000
set opts ?vga=791&video=vesafb:ywrap,mtrr&ramdisk_size=16777216&rw&quiet&initrd=initrd
menu Please choose an operating system to boot
    item normal Install Proxmox
    item debug Install Proxmox (Debug Mode)
choose --default normal --timeout 5000 target && goto ${target}
:debug
    set kernel ${webserver}/boot/proxmox/linux26${opts}&splash=verbose&proxdebug
    goto init
:normal
    set kernel ${webserver}/boot/proxmox/linux26${opts}&splash=silent
    goto init
:init
initrd ${webserver}/boot/proxmox/initrd
chain ${kernel}

i have tried both proxmox-ve_7.4-1.iso proxmox-ve_8.2-2.iso.