2025-04-15 22:38:10,103 - __main__ - INFO - Starting LightStar API server
2025-04-15 22:43:18,634 - backend.api.research - INFO - Extracting keywords from: string
2025-04-15 22:43:18,634 - backend.api.research - ERROR - Error extracting keywords: 'LLMClient' object has no attribute 'extract_keywords'
Traceback (most recent call last):
  File "C:\Users\ÐìÃ÷µÏ\Desktop\Lightstar\backend\api\research.py", line 66, in extract_keywords
    result = await research_agent.llm_client.extract_keywords(
AttributeError: 'LLMClient' object has no attribute 'extract_keywords'