Error in developer blog

I try to follow the instruction(https://developer.nvidia.com/blog/developing-robotics-applications-in-python-with-isaac-sdk/)
when at the beginning, I run bazel run apps/mybot:mybot, I got the error
ERROR: Skipping ‘apps/mybot:mybot’: error loading package ‘apps/mybot’: Every .bzl file must have a corresponding package, but ‘//engine/build:isaac.bzl’ does not have one. Please create a BUILD file in the same or any parent directory. Note that this BUILD file does not need to do anything except exist.