[BUG]: Tool not found for Data Science agent

[magallardo]

data_science

Description of issue

After running a few interactions with the agent, I get the error below

Environment

e.g.

• OS & Architecture: macOS 14.1 (Apple Silicon/arm64)
• Python version: 3.12

Reproduction steps or code

- Hi, what data do you have access to?
- I need more details in the train table. What countries exist? How many stores are there?
- Please generate a plot with total sales per country.
- What kinds of forecasting models can I train in BQML?
- Yes
- Approved
- Yes
- yes
- 30 days
- Italy

Error log

  GoogleTool(
2025-11-20 17:01:40,688 - ERROR - adk_web_server.py:1404 - Error in event_generator: Function call_analytics_agent is not found in the tools_dict.
Traceback (most recent call last):
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/cli/adk_web_server.py", line 1394, in event_generator
    async for event in agen:
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/runners.py", line 428, in run_async
    async for event in agen:
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/runners.py", line 412, in _run_with_trace
    async for event in agen:
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/runners.py", line 498, in _exec_with_plugin
    async for event in agen:
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/runners.py", line 401, in execute
    async for event in agen:
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/agents/base_agent.py", line 307, in run_async
    async for event in agen:
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/agents/base_agent.py", line 297, in _run_with_trace
    async for event in agen:
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/agents/llm_agent.py", line 395, in _run_async_impl
    async for event in agen:
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 356, in run_async
    async for event in agen:
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 424, in _run_one_step_async
    async for event in agen:
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 522, in _postprocess_async
    async for event in agen:
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 645, in _postprocess_handle_function_calls_async
    if function_response_event := await functions.handle_function_calls_async(
                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/flows/llm_flows/functions.py", line 198, in handle_function_calls_async
    return await handle_function_call_list_async(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/flows/llm_flows/functions.py", line 244, in handle_function_call_list_async
    function_response_events = await asyncio.gather(*tasks)
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/flows/llm_flows/functions.py", line 278, in _execute_single_function_call_async
    tool, tool_context = _get_tool_and_context(
                         ^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/test/google/adk-samples/python/agents/data-science/.venv/lib/python3.12/site-packages/google/adk/flows/llm_flows/functions.py", line 649, in _get_tool_and_context
    raise ValueError(
ValueError: Function call_analytics_agent is not found in the tools_dict.