`server-filesystem` connection issue

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mcp_clients.append(
StdIOStatefulClient(
name="file_system_mcp",
command="npx",
args=[
"-y",
"@modelcontextprotocol/server-filesystem",
agent_working_dir
]
),
)

**Error occurred during runtime:：**

| INFO | _stateful_client_base:connect:66 - MCP client connected.
| ERROR | main:main:217 - Connection closed
Traceback (most recent call last):
File "D:\python\multi-agent\agentscope-main\examples\meta_planner_agent\main.py", line 175, in main
await mcp_client.connect()
File "D:\python\multi-agent\agentscope-main\src\agentscope\mcp\_stateful_client_base.py", line 63, in connect
await self.session.initialize()
File "D:\Anaconda\envs\agentscope\lib\site-packages\mcp\client\session.py", line 152, in initialize
result = await self.send_request(
File "D:\Anaconda\envs\agentscope\lib\site-packages\mcp\shared\session.py", line 286, in send_request
raise McpError(response_or_error.error)
mcp.shared.exceptions.McpError: Connection closed
2026-01-16 15:29:06,051 | INFO | _stateful_client_base:close:83 - MCP client closed.
Traceback (most recent call last):
File "D:\python\multi-agent\agentscope-main\examples\meta_planner_agent\main.py", line 239, in
asyncio.run(main())
File "D:\Anaconda\envs\agentscope\lib\asyncio\runners.py", line 44, in run
return loop.run_until_complete(main)
File "D:\Anaconda\envs\agentscope\lib\asyncio\base_events.py", line 649, in run_until_complete
return future.result()
File "D:\python\multi-agent\agentscope-main\examples\meta_planner_agent\main.py", line 221, in main
await mcp_client.close()
File "D:\python\multi-agent\agentscope-main\src\agentscope\mcp\_stateful_client_base.py", line 76, in close
raise RuntimeError(
RuntimeError: The MCP server is not connected. Call connect() before closing.