runtime error

Exit code: 1. Reason: INFO:matplotlib.font_manager:generated new fontManager ERROR:tools.web_search:TAVILY_API_KEY environment variable not set Traceback (most recent call last): File "/home/user/app/app.py", line 6, in <module> from agent import gaai_agent File "/home/user/app/agent.py", line 21, in <module> web_search = WebSearchTool(max_results=5) File "/usr/local/lib/python3.10/site-packages/smolagents/tools.py", line 67, in new_init original_init(self, *args, **kwargs) File "/home/user/app/tools/web_search.py", line 26, in __init__ raise ValueError("TAVILY_API_KEY environment variable must be set") ValueError: TAVILY_API_KEY environment variable must be set

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