nvidia-driver-local-repo-ubuntu2204 error when apt update

apt update -y

获取:1 file:/var/cudnn-local-repo-ubuntu2204-8.9.3.28 InRelease [1,572 B]获取:2 file:/var/nvidia-driver-local-repo-ubuntu2204-515.105.01 InRelease [1,575 B]获取:1 file:/var/cudnn-local-repo-ubuntu2204-8.9.3.28 InRelease [1,572 B]获取:2 file:/var/nvidia-driver-local-repo-ubuntu2204-515.105.01 InRelease [1,575 B]ERROR :2 file:/var/nvidia-driver-local-repo-ubuntu2204-515.105.01 InRelease 由于没有公钥，无法验证下列签名： NO_PUBKEY 240051174695BDB1

how can I fix this error?

I dont know how to fix or walk around. please help.