Matplot lib gui not openning us after hitting ENTER for lidar camera calibration

[Beginner045]

Hello, Thank you very much for your repository. I have been using Helios (Lidar) and Triton(RGB) cameras LUCID Vision Labs. I have been able to do the camera calibration of the RGB camera, and obtain the ost.yaml file.
However when I try t calibrate the lidar and rgb cameras together to obtain a combined point cloud, using :
rosrun lidar_camera_calibration calibrate_camera_lidar.py --calibrate and hit ENTER, the gui for picking points doesn't show up at all.
I play the updated rosbag after camera calibration in a different terminal parallely.

I have ROS Melodic and Ubuntu 18.04. Please help me figure out.

[heethesh]

See #16 #18 #19 #26

1. Check if camera and point cloud are timestamped synced (see the above threads for more details)
2. What is the format of your LiDAR point cloud? (if its different from Velodyne, see the above threads for a similar fix with Ouster)