Hi @AswinGururaj,
One option would be for you to move to ROS Noetic. FUNMAP seems functional there and we’re actively improving it. It’s what I use.
Installing Noetic takes some time and care. You could look at the the installation guide to see what’s involved.
In addition to working for me, @smth described his experience with FUNMAP in ROS Noetic in a helpful forum post.
Best wishes,
Charlie
Charlie Kemp, PhD
co-founder & CTO
Hello Robot Inc.
http://charliekemp.com