runtime error

Exit code: 1. Reason: USER_AGENT environment variable not set, consider setting it to identify your requests. /app/research_AI_Agent.py:13: LangGraphDeprecatedSinceV10: Importing Send from langgraph.constants is deprecated. Please use 'from langgraph.types import Send' instead. Deprecated in LangGraph V1.0 to be removed in V2.0. from langgraph.constants import Send Traceback (most recent call last): File "/usr/local/lib/python3.13/site-packages/langchain_community/utilities/duckduckgo_search.py", line 49, in validate_environment from ddgs import DDGS # noqa: F401 ^^^^^^^^^^^^^^^^^^^^^ ModuleNotFoundError: No module named 'ddgs' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/app/research_AI_Agent.py", line 63, in <module> search = DuckDuckGoSearchResults(output_format="list") File "/usr/local/lib/python3.13/site-packages/langchain_core/tools/base.py", line 551, in __init__ super().__init__(**kwargs) ~~~~~~~~~~~~~~~~^^^^^^^^^^ File "/usr/local/lib/python3.13/site-packages/langchain_core/load/serializable.py", line 118, in __init__ super().__init__(*args, **kwargs) ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^ File "/usr/local/lib/python3.13/site-packages/pydantic/main.py", line 250, in __init__ validated_self = self.__pydantic_validator__.validate_python(data, self_instance=self) File "/usr/local/lib/python3.13/site-packages/pydantic/main.py", line 250, in __init__ validated_self = self.__pydantic_validator__.validate_python(data, self_instance=self) File "/usr/local/lib/python3.13/site-packages/langchain_community/utilities/duckduckgo_search.py", line 51, in validate_environment raise ImportError( ...<2 lines>... ) ImportError: Could not import ddgs python package. Please install it with `pip install -U ddgs`.

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