genPOI: Error when using custom (vanilla) dimensions

[jobe1986]

genPOI is producing an error when using a custom datapack dimension:

2022-07-16 16:14:36  Loaded UUID cache from '/var/www/simplanet/uuidcache.dat' with 120 entries.
*******************************************************************************
2022-07-16 16:14:36 E An error has occurred. This may be a bug. Please let us know!
See http://docs.overviewer.org/en/latest/index.html#help

This is the error that occurred:
Traceback (most recent call last):
  File "/home/simplanet/overviewer/bin/overviewer.py", line 653, in <module>
    ret = main()
  File "/home/simplanet/overviewer/bin/overviewer.py", line 168, in main
    g.genPOI.main()
  File "/home/simplanet/overviewer/bin/overviewer_core/aux_files/genPOI.py", line 601, in main
    handlePlayers(worldpath, list(worldpath_filters), markers)
  File "/home/simplanet/overviewer/bin/overviewer_core/aux_files/genPOI.py", line 367, in handlePlayers
    dimension = int(re.match(r"^DIM(_MYST)?(-?\d+)$", rset.get_type()).group(2))
AttributeError: 'NoneType' object has no attribute 'group'

Should be an easy fix, basically appears to be the result of assuming a dimension is only ever "DIM" or "DIM-".

For reference the data pack used is https://github.com/Simplanet/Simplanet-Dimensions-Datapack and the render configuration for the dimension is:

renders["badlands"] = {
    'world': 'Simplanet',
    'title': 'Badlands (Mesa)',
    'rendermode': 'normal',
    'dimension': 'dimensions/simplanet/badlands',
    "northdirection" : "upper-right",
    'markers': badlandsmarkers,
    'minzoom': 2,
    'imgformat': 'jpeg',
    'imgquality': 90,
}

[ajh123]

The main README states ..

PLEASE NOTE: Overviewer is currently unmaintained. PRs will not be merged and issues will not be addressed. The website and repository will remain online and accessible.

Instead please use the new working (“successor”) version of Overviewer supporting 1.20 worlds and textures.
https://github.com/GregoryAM-SP/The-Minecraft-Overviewer