I can't use my finetuned model

ChatGPT Bugs
1

I have trained models and got the model name: “davinci:-- —”. However when I used:
answer = openai.Completion.create(
model=MODEL,
prompt=MY_PROMPT,
)

I received an error message that my model didn’t exist.

I have checked models by using openai.FineTune.retrieve, openai.FineTune.list and it exists.

What should I do?