70dcBUFysyo has age restrictions and cannot be accessed without confirmation.

[jinhang87]

Describe the bug Hello, I found that a small number of videos prompt this error. Please help take a look.

To Reproduce Steps to reproduce the behavior:

1. test codes

from pytubefix import YouTube
from pytubefix import Channel

def test_YouTube():
    url = 'https://www.youtube.com/watch?v=70dcBUFysyo' # has age restrictions and cannot be accessed without confirmation.

    yt = YouTube(url, on_progress_callback=show_download_progress, use_oauth=True, allow_oauth_cache=True)
        
    video_stream = yt.streams.get_highest_resolution()

    output_path = r"./"
    video_title_file = "test1.mp4"
    video_stream.download(output_path=output_path, filename=video_title_file, max_retries=5)

def show_download_progress(stream, chunk, bytes_remaining):
    total_size = stream.filesize
    bytes_downloaded = total_size - bytes_remaining

    progress = (bytes_downloaded / total_size) * 100
    print(f"{progress:.2f}% ({bytes_downloaded / 1024 / 1024:.2f} MB / {total_size / 1024 / 1024:.2f} MB)", end='\r')

if __name__ == '__main__': 
    test_YouTube()

3. See error

Traceback (most recent call last):
  File "D:\code\python\project\examples\pytube\test_pytubefix.py", line 74, in <module>
    if __name__ == '__main__': 
  File "D:\code\python\project\examples\pytube\test_pytubefix.py", line 15, in test_YouTube

  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python310\lib\site-packages\pytubefix\__main__.py", line 563, in streams
    self.check_availability()
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python310\lib\site-packages\pytubefix\__main__.py", line 321, in check_availability
    self.age_check()
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python310\lib\site-packages\pytubefix\__main__.py", line 417, in age_check
    raise exceptions.AgeCheckRequiredError(self.video_id)
pytubefix.exceptions.AgeCheckRequiredError: 70dcBUFysyo has age restrictions and cannot be accessed without confirmation.

Desktop (please complete the following information):

• OS: [Windows 11]
• Python Version [3.10.11]
• Pytubefix Version [6.11.0]