AttributeError: 'Matcher' object has no attribute 'tree' when calling `reverse_geocode`

[cantodelobo]

AttributeError: 'Matcher' object has no attribute 'tree' when calling reverse_geocode

I have a problem when running matcher.reverse_geocode, this is the error:

Traceback (most recent call last):
  File "/mnt/d/DeepRetailWA2/probando.py", line 11, in <module>
    response2 = matcher.reverse_geocode([(-37.761993408203125, 144.97064208984375)])
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/mnt/d/DeepRetailWA2/.venv/lib/python3.12/site-packages/whereabouts/Matcher.py", line 155, in reverse_geocode
    query_indices = self.tree.query(points)[1]
                    ^^^^^^^^^
AttributeError: 'Matcher' object has no attribute 'tree'

This is my code:

import json

from whereabouts.Matcher import Matcher

matcher = Matcher("au_all_sm")
response = matcher.geocode(
    ["34/121 exhibition st melbourne", "645 sydney rd brunswick"]
)
print(json.dumps(response, indent=4))

response2 = matcher.reverse_geocode([(-37.761993408203125, 144.97064208984375)])

print(json.dumps(response2, indent=4))

Expected behavior:
reverse_geocode should return the nearest address for the given coordinates.

Actual behavior:
It raises an AttributeError because the Matcher object has no attribute tree.