OpenAI API error: "AttributeError: 'openai' module has no 'Thread' attribute"

I'm developing a chatbot using OpenAI's Assistants API and facing an issue with integrating the Thread functionality. When trying to create a thread using openai.Thread.create, I encounter an AttributeError stating that the 'openai' module has no attribute 'Thread'.

Here's the code:

import openai

openai.api_key = "my_key"

def my_chatbot(user_input, assistant_id):
    thread_id = openai.Thread.create(assistant=assistant_id)["id"]

    openai.Message.create(
        thread=thread_id,
        role="user",
        content=user_input
    )

    run = openai.Run.create(
        thread=thread_id,
        assistant=assistant_id
    )

    messages = openai.Message.list(thread=thread_id)
    return messages["data"][-1]["content"]

if __name__ == "__main__":
    assistant_id = "my_id"
    while True:
        user_input = input("Você: ")
        if user_input.lower() in ["sair", "fechar"]:
            break

        chatbot_response = my_chatbot(user_input, assistant_id)
        print("Chatbot:", chatbot_response)

The error message is

Traceback (most recent call last):
  File "/Users/felipestoker/PycharmProjects/chatbot/main.py", line 34, in <module>
    chatbot_response = chatbot_webjasper(user_input, assistant_id)
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/felipestoker/PycharmProjects/chatbot/main.py", line 8, in chatbot_webjasper
    thread_id = openai.Thread.create(assistant=assistant_id)["id"]
                ^^^^^^^^^^^^^
AttributeError: module 'openai' has no attribute 'Thread'