Set Search Engine does not work on SearchGraph

[AlanY1an]

Describe the bug
I set search_engine as duckduckgo. But it still uses Google Search engine and it seems that Google search cannot be scraped.

`
graph_config = {
"llm_model": "ollama/llama3",
"llm": {
"model": "ollama/llama3",
"format": "json",
"temperature": 0,
"base_url": "http://localhost:11434",
},
"verbose": True,
"headless": False,
"search_engine": "duckduckgo",
"max_results": 5,
}

prompt = {
"description": "Finding description about company {company}.",
"history": "Finding history about company {company}.",
"events": "Finding recent events about company{company}.",
}

def retrieve_basic_info_by_search(company_name: str) -> Dict[str, str]:
smart_scraper_graph = SearchGraph(
prompt=prompt["description"].format(company=company_name),
config=graph_config,
)
result = smart_scraper_graph.run()
return json.dumps(result, indent=2)

if name == "main":
company = "LinkedIn"
company_info = retrieve_basic_info_by_search(company)
print(f"\nSummary for {company}:")
print(company_info)
`

--- Executing MergeAnswers Node ---

Summary for LinkedIn:
{
"company_description": [
{
"source": "Website 1",
"description": "LinkedIn is a social networking platform designed for professionals and job seekers."
},
{
"source": "Website 2",
"description": "LinkedIn is a business and employment-oriented online service that operates through websites and mobile apps."
}
],
"sources": [
"http://www.google.com/search?hl=en&q={"description+about+LinkedIn"+:+"company+LinkedIn"}"
]
}

[dosubot]

Hey there, @AlanY1an! I'm here to help you out with any bugs or questions you have while waiting for a human maintainer. Let's tackle this together!

To ensure that the SearchGraph uses DuckDuckGo instead of Google, make sure you have the necessary dependencies installed. Specifically, you need the DuckDuckGoSearchResults from the langchain_community.tools module and the duckduckgo-search library version >=7.2.1 ^[1][2].

Additionally, verify that your configuration is correctly set up to use DuckDuckGo by including "search_engine": "duckduckgo" in your graph_config, which you have already done. If the issue persists, check if there are any error messages or logs that might indicate why the setting is being ignored. The verbose setting in your configuration should help provide more detailed logs during execution ^[3].

To continue talking to Dosu, mention @dosu.

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