fastmcp.run() runtimeerror: task group is not initialized. make sure to use run(). #1372
Description
Initial Checks
- I confirm that I'm using the latest version of MCP Python SDK
- I confirm that I searched for my issue in https://github.com/modelcontextprotocol/python-sdk/issues before opening this issue
Description
following error sometime occur.
fastmcp.run() runtimeerror: task group is not initialized. make sure to use run().
Example Code
from mcp.server.fastmcp import FastMCP
# FastMCP instance
mcp = FastMCP(
name=setting.server["name"],
host=setting.server["host"],
port=setting.server["port"],
streamable_http_path=setting.server["streamable_http_path"],
api_route="/mcp/",
debug=True,
)
try:
mcp.run(transport="streamable-http")
except KeyboardInterrupt:
logger.info("Service shut down")Python & MCP Python SDK
mcp version (1.13.1)