dify_plugin\invocations\app\chat.py invoke method when pass conversation_id throw exception

[libing2018]

when use Chatflow Invoker plugin in Marketplace, use it local chatflow invoke meet an except, look its source code, find the except happens in dify plugin sdk.
https://github.com/yzddmr6/chatflow_invoker

turn on Keep Conversation

send the second message in a conversion_id, when sub_conversation_id is not null and pass value to conversation_id, code run response = self.session.app.chat.invoke throw except {"code":"invalid_param","message":"","status":400}