[hailctl] Improve VEP region error (#8462)
[hailctl] Improve VEP region error (#8462)


danking/hail,danking/hail,cseed/hail,hail-is/hail,danking/hail,hail-is/hail,hail-is/hail,cseed/hail,danking/hail,cseed/hail,danking/hail,hail-is/hail,hail-is/hail,cseed/hail,hail-is/hail,danking/hail,cseed/hail,cseed/hail,danking/hail,cseed/hail,hail-is/hail,hail-is/hail,cseed/hail,danking/hail