apriltag_msgs issue while build the codes

[bhyu0924]

Hi! I am trying to build your code.

I already installed invariant-ekf using CMake successfully.

However, I would like to manage the information by using ROS nodes.
To do that, I tried building this code but unfortunately failed.

The error message seems to be related to the package "apriltag_msgs".

I install that package using apt but failed again.

When I comment the find_package(april_msgs) in cmakelist, build process never finished ..

What should I do to run your code?

Thanks in advance.