System Information
Operating system: Windows-10-10.0.19043-SP0 64 Bits
Graphics card: Quadro K620/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 452.57

Blender Version
Broken: version: 3.0.1, branch: master, commit date: 2022-01-25 17:19, hash: rBdc2d18018171
Worked: (newest version of Blender that worked as expected)

Short description of error
when I click on Landscape Eroder It Showing me this message

Python: Traceback (most recent call last):

File "C:\Program Files\Blender Foundation\Blender 3.0\3.0\scripts\addons\ant_landscape\ant_functions.py", line 1062, in execute
  ob.vertex_groups.active = vg

RuntimeError: Error: VertexGroup 'capacity' not found in object 'Landscape'

location: <unknown location>:-1

Exact steps for others to reproduce the error

1. Enable the ANT Add-on.
2. Go to workspace and Add a mesh (press Shif A>Mesh>landscape)
3. Then press N and click on the Create Tab there is a option Landscape Eroder
4. Click on Landscape Eroder you will find out it is not working.