Error in Lab kodekloud enggineer task

Warning Failed 9s (x2 over 26s) kubelet Failed to pull image “nginx”: rpc error: code = Unknown desc = Error response from daemon: toomanyrequests: You have reached your pull rate limit. You may increase the limit by authenticating and upgrading: https://www.docker.com/increase-rate-limit
Warning Failed 9s (x2 over 26s) kubelet Error: ErrImagePull