Fix invalid username lookup

main.py

@@ -192,7 +192,7 @@ async def find_connections_from_videos(twitch: Twitch, videos: list[Video], user
  if names := re.findall('(@\w+)', v.title):
  for name in names:
  n = name.replace("@", "").lower()
- if n in BLACKLISTED:
+ if n in BLACKLISTED or len(n) < 4:
  continue
  if n not in users:
  u = await get_user_by_name(twitch=twitch, username=n)
@@ -216,7 +216,11 @@ async def find_connections_from_videos(twitch: Twitch, videos: list[Video], user
 
 async def get_user_by_name(twitch: Twitch, username: str):
  # TODO: possibly optimize to fetch multiple per depth level at once
- user = await first(twitch.get_users(logins=[username]))
+ try:
+ user = await first(twitch.get_users(logins=[username]))
+ except Exception as e:
+ print(f"Exception with username {username}, {e}")
+ user = None
  if user and user.display_name.lower() == username.lower():
  return user
  return None
@@ -226,7 +230,7 @@ async def get_videos(twitch: Twitch, user: TwitchUser):
  videos = []
  async for v in twitch.get_videos(user_id=user.id, first=MAX_VOD_DEPTH,
  sort=SortMethod.TIME, video_type=VideoType.ARCHIVE):
- if "@" in v.title:
+ if v and v.title and "@" in v.title:
  videos.append(v)
  return videos