@tacsenlp meanwhile check this paper: (PDF) Enhancing Rasa NLU model for Vietnamese chatbot focus on the pipeline mentioned.
@tacsenlp Even check this of my solution thread: Rasa Train Error Function call stack: train_on_batch - #15 by trinhminhhieu
@tacsenlp Even check this: [ASK] Process get killed when training RASA core - #9 by nik202
I hope this will solve your issue.