“Can not allocate kernel buffer” when I use officail ubuntu image to create instance

Hi, all I download ubuntu focal-server-cloudimg-amd64.img from officail website[1]. And when I use it to creae instance, I can access the grub interface in horizon vnc. But if I choose "Ubuntu", I get: error: cannot allocate kernel buffer. error: you need to load the kernel first. Can I get some advice on how I should use it properly to create instances [1] https://cloud-images.ubuntu.com/focal/20221121/focal-server-cloudimg-amd64.i...