PCL Octree Error: Assertion Failed: index_arg < input_->points.size()

The error message indicates that an assertion failed in the PCL (Point Cloud Library) code. Specifically, the assertion failed at line 603 in the file 'octree_pointcloud.hpp'.

The assertion checks if the index argument is less than the size of the points in the input point cloud. This means that the 'index_arg' variable is likely exceeding the range of valid indices for the point cloud.

To resolve this issue, you need to ensure that the 'index_arg' variable is within the valid range of indices for the input point cloud.