I m trying this on the same Linux box (Ubuntu 18)

Please try to copy paste messages rather than photographing them. I find photos very hard to read. Your lakeFS instance (not lakectl... the server / daemon itself) is probably using incorrect s3 credentials to access minio. Could you try to verify that what you are using is correct? As an alternative, demo.lakefs.io is probably the easiest tryout environment that you could get into.

Thank you for the pointer. Will check this..