Basic Example not working

[CodingTil]

For the basic example

from lrc_kit import ComboLyricsProvider, SearchRequest

engine = ComboLyricsProvider()
search = SearchRequest('eminem', 'stan')
result, engine_used = engine.search(search)
result.export('stan.lrc')

I get the following error:

ERROR:root:'NoneType' object has no attribute 'find_all'
Traceback (most recent call last):
  File "/home/a/test.py", line 6, in <module>
    result, engine_used = engine.search(search)
  File "/home/a/miniconda3/envs/b/lib/python3.9/site-packages/lrc_kit/providers.py", line 92, in search
    res = provider(**self.kwargs).search(search_request)
  File "/home/a/miniconda3/envs/b/lib/python3.9/site-packages/lrc_kit/providers.py", line 45, in search
    raise e
  File "/home/a/miniconda3/envs/b/lib/python3.9/site-packages/lrc_kit/providers.py", line 32, in search
    val, meta = self.raw_search(search_request)
  File "/home/a/miniconda3/envs/b/lib/python3.9/site-packages/lrc_kit/providers.py", line 358, in raw_search
    links = links.find_all('a')
AttributeError: 'NoneType' object has no attribute 'find_all'

Based on the source code, I need some API?