Selected Agent policy plugin version does not support MCP tool

Hello Dify team!
I am currently developing an agent in chatflow and when using the FunctionCalling (supports MCP tools) strategy, I found that I cannot use our self-added MCP service (HTTP).
Prompt: The currently selected Agent strategy plugin version does not support MCP tools.

How can this be resolved?

It might be an issue with the LLM being used, as distilled models do not support toolcall.