[OpenAI] 为什么 openai api 提示配额不足

一开始用 llama-index 的 package ， 提示 429 ，检查官网还是有配额的，用了官方的代码示例还是说不行，请问有人知道怎么回事吗？

openai.RateLimitError: Error code: 429 - {'error': {'message': 'You exceeded your current quota, please check your plan and billing details. For more information on this error, read the docs: https://platform.openai.com/docs/guides/error-codes/api-errors.', 'type': 'insufficient_quota', 'param': None, 'code': 'insufficient_quota'}}

python 代码如下

def openai():
    from openai import OpenAI
    os.environ["OPENAI_API_KEY"] = (
        "sk-proj-xxxxxxxxxxxx"
    )

    client = OpenAI()

    stream = client.chat.completions.create(
        model="gpt-3.5-turbo",
        messages=[{"role": "user", "content": "Say this is a test"}],
        stream=True,
    )
    for chunk in stream:
        if chunk.choices[0].delta.content is not None:
            print(chunk.choices[0].delta.content, end="")

去官网查看之后明明是有配额的？请问这是怎么回事？