Fail to build docker file

Hi Team Kodekloud,
Can anyone assist me regarding error below?
Thanks

https://learn.kodekloud.com/user/courses/labs-linux-foundation-certified-system-administrator-lfcs/module/f81c0b0c-ebab-4714-bbfe-fc2ac7be20f8/lesson/ab034339-e109-4154-870f-6709b2da3e3c?autoplay=true

looks good now, logged out and logged back into node01