The addon failed to initialize in Blender 3.4.1

[Exomancer]

On trying to activate the addon, Blender 3.4.1 gives the following error:

Report: Error
Traceback (most recent call last):
File "/snap/blender/3132/3.4/scripts/modules/addon_utils.py", line 333, in enable mod = import(module_name)
File "/home//.config/blender/3.4/scripts/addons/fountain_script_init_.py", line 28, in from . import fountain
ImportError: attempted relative import with no known parent package