System Information
Operating system: macOS-12.2.1-x86_64-i386-64bit 64 Bits
Graphics card: Apple M1 Apple 4.1 Metal - 76.3

Blender Version
Broken: version: 3.1.2, branch: master, commit date: 2022-03-31 17:40, hash: rBcc66d1020c3b
Worked: (newest version of Blender that worked as expected)

Addon Information
Name: A.N.T.Landscape (0, 1, 8)
Author: Jimmy Hazevoet

When attempting to use the landscape eroder from Landscape Tools, I receive a Python error message: Vertex Group capacity not found in object landscape. The eroder tool does appear however the message reappears when trying to use the eroder tool itself.
[Please fill out a short description of the error here]

Add a landscape mesh. (I chose mountain 1) Click off to close down initial drop down menu. Click N. Choose Create tab. Click Landscape Tools. Choose Landscape Eroder. Error message appears at this point. Attempt to use eroder tool. Message repeats

I deleted Blender and re installed but the error still appeared.
[Please describe the exact steps needed to reproduce the issue]
[Based on the default startup or an attached .blend file (as simple as possible)]