Getting the following error when trying to run the cloud_engineer_agent.py directly

[zensim]

Hi,
I am using win 11, vs code and python 311. Could not run the Streamlit so tried running the above py code directly. Getting the exception below. Please advise. Thanks

client failed to initializeunhandled errors in a TaskGroup (1 sub-exception)

• Exception Group Traceback (most recent call last):
  | File "...venv\Lib\site-packages\strands\tools\mcp\mcp_client.py", line 107, in start
  | self._init_future.result(timeout=120) #30 was original val
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  | File "..\Python311\Lib\concurrent\futures_base.py", line 456, in result
  | return self.__get_result()
  | ^^^^^^^^^^^^^^^^^^^
  | File "..\Python311\Lib\concurrent\futures_base.py", line 401, in __get_result
  | raise self.exception
  | File "..venv\Lib\site-packages\strands\tools\mcp\mcp_client.py", line 223, in async_background_thread
  | async with self.transport_callable() as (read_stream, write_stream, *):
  | File "..\Python311\Lib\contextlib.py", line 222, in aexit
  | await self.gen.athrow(typ, value, traceback)
  | File "...venv\Lib\site-packages\mcp\client\stdio_init.py", line 178, in stdio_client
  | async with (
  | File "...venv\Lib\site-packages\anyio_backends_asyncio.py", line 772, in aexit
  | raise BaseExceptionGroup(
  | ExceptionGroup: unhandled errors in a TaskGroup (1 sub-exception)
  +-+---------------- 1 ----------------
  | Exception Group Traceback (most recent call last):
  | File "..venv\Lib\site-packages\mcp\client\stdio_init.py", line 185, in stdio_client
  | yield read_stream, write_stream
  | File "..venv\Lib\site-packages\strands\tools\mcp\mcp_client.py", line 225, in _async_background_thread
  | async with ClientSession(read_stream, write_stream) as session:
  | File "...venv\Lib\site-packages\mcp\shared\session.py", line 223, in aexit
  | return await self._task_group.aexit(exc_type, exc_val, exc_tb)
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  | File "..venv\Lib\site-packages\anyio_backends_asyncio.py", line 772, in aexit
  | raise BaseExceptionGroup(
  | ExceptionGroup: unhandled errors in a TaskGroup (1 sub-exception)
  +-+---------------- 1 ----------------
  | Traceback (most recent call last):
  | File "..venv\Lib\site-packages\strands\tools\mcp\mcp_client.py", line 227, in _async_background_thread
  | await session.initialize()
  | File "..venv\Lib\site-packages\mcp\client\session.py", line 133, in initialize
  | result = await self.send_request(
  | ^^^^^^^^^^^^^^^^^^^^^^^^
  | File "..venv\Lib\site-packages\mcp\shared\session.py", line 297, in send_request
  | raise McpError(response_or_error.error)
  | mcp.shared.exceptions.McpError: Connection closed
  +------------------------------------
• Exception Group Traceback (most recent call last):
  | File "..venv\Lib\site-packages\strands\tools\mcp\mcp_client.py", line 107, in start
  | self._init_future.result(timeout=120) #30 was original val
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  | File "..\Python311\Lib\concurrent\futures_base.py", line 456, in result
  | return self.__get_result()
  | ^^^^^^^^^^^^^^^^^^^
  | File "..\Python311\Lib\concurrent\futures_base.py", line 401, in __get_result
  | raise self.exception
  | File "..venv\Lib\site-packages\strands\tools\mcp\mcp_client.py", line 223, in async_background_thread
  | async with self.transport_callable() as (read_stream, write_stream, *):
  | File "..\Python311\Lib\contextlib.py", line 222, in aexit
  | await self.gen.athrow(typ, value, traceback)
  | File "..venv\Lib\site-packages\mcp\client\stdio_init.py", line 178, in stdio_client
  | async with (
  | File "..venv\Lib\site-packages\anyio_backends_asyncio.py", line 772, in aexit
  | raise BaseExceptionGroup(
  | ExceptionGroup: unhandled errors in a TaskGroup (1 sub-exception)
  +-+---------------- 1 ----------------
  | Exception Group Traceback (most recent call last):
  | File "..venv\Lib\site-packages\mcp\client\stdio_init.py", line 185, in stdio_client
  | yield read_stream, write_stream
  | File "..venv\Lib\site-packages\strands\tools\mcp\mcp_client.py", line 225, in _async_background_thread
  | async with ClientSession(read_stream, write_stream) as session:
  | File "..venv\Lib\site-packages\mcp\shared\session.py", line 223, in aexit
  | return await self._task_group.aexit(exc_type, exc_val, exc_tb)
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  | File "..venv\Lib\site-packages\anyio_backends_asyncio.py", line 772, in aexit
  | raise BaseExceptionGroup(
  | ExceptionGroup: unhandled errors in a TaskGroup (1 sub-exception)
  +-+---------------- 1 ----------------
  | Traceback (most recent call last):
  | File "..venv\Lib\site-packages\strands\tools\mcp\mcp_client.py", line 227, in _async_background_thread
  | await session.initialize()
  | File "...venv\Lib\site-packages\mcp\client\session.py", line 133, in initialize
  | result = await self.send_request(
  | ^^^^^^^^^^^^^^^^^^^^^^^^
  | File "...venv\Lib\site-packages\mcp\shared\session.py", line 297, in send_request
  | raise McpError(response_or_error.error)
  | mcp.shared.exceptions.McpError: Connection closed
  +------------------------------------

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "...\cloud_engineer_agent.py", line 30, in
aws_docs_mcp_client.start()
File "...venv\Lib\site-packages\strands\tools\mcp\mcp_client.py", line 113, in start
raise MCPClientInitializationError("the client initialization failed") from e
strands.types.exceptions.MCPClientInitializationError: the client initialization failed

[1851616111]

Me too，Ihave the same issue。

[amazon-q-developer]

Progress Updates

• I'll help you resolve the error when running cloud_engineer_agent.py directly. First, I'll explore the repository structure to understand the codebase better.
• Now I'll examine the README.md file to understand the purpose of this repository and how it's intended to be used.
• Now I'll look at the requirements.txt file to understand the dependencies of this project.
• Let's examine the cloud_engineer_agent.py file which is causing the error to understand what's happening.
• Let's also look at the app.py file to understand how the application is intended to be run with Streamlit.
• Now I'll analyze the error message and the code to identify the issue with running cloud_engineer_agent.py directly.
• Analyzing the error and identifying the root cause
• Based on my analysis, I'll modify the cloud_engineer_agent.py file to add better error handling and provide a fallback mechanism when the MCP clients can't be initialized.
• Now I need to update the rest of the cloud_engineer_agent.py file to complete the implementation of the execute_predefined_task and execute_custom_task functions.
• I'll now update the main section of the cloud_engineer_agent.py file to provide better error handling and user guidance when running the script directly.
• Now I need to update the app.py file to ensure it works with our modified cloud_engineer_agent.py implementation.
• Let me fix the error in my previous command and update the app.py file correctly.
• It seems there was an issue with the previous edit. Let me try again to update the app.py file.
• I need to recreate the app.py file since it appears to have been emptied. I'll create a new version with the updated code.
• Now I'll create a README.md.update file with instructions for the user on how to run the application with the changes we've made.
• Let me create a plan document to summarize the changes I've made and explain how they address the issue.
• Summarize the changes made to fix the issue with running cloud_engineer_agent.py directly on Windows 11
• Let me summarize the changes I've made to fix the issue with running cloud_engineer_agent.py directly on Windows 11.
• Final summary of changes and how they address the issue

---

✅ I finished the proposed code changes, and the pull request is ready for review: #2.

Comment on the pull request to provide feedback and request a new iteration.

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