ChatOpenAI api key Error

[kein903]

I build llama.cpp and host http server.
And my mode backend I use ChatOpenAI to connect this server. Here is my code.

javascript
const model = new ChatOpenAI({
      modelName: "llama",
      baseURL: "my server",
     apiKey: "sk-no-key-required",
      temperature: 0.6,
      defaultHeaders: {
        "Content-Type": "application/json",
      },
    });
const prompt = ChatPromptTemplate.fromTemplate(`
      You are an AI customer care agent for Kubo who sell tech products.
      Before helping customers, you MUST authenticate them first.
      
      IMPORTANT:
      1. Ask for the last 4 digits of their phone number and ZIP code
      2. Use the authenticate_customer tool to verify their identity
      3. Only proceed with their request after successful authentication
      
      Always reply with a JSON array of messages, each containing 'text', 'facialExpression', and 'animation'.
      
      User message: {user_message}
    `);
const chain = prompt.pipe(model).pipe(outputParser);

    // Initial greeting
    const response = await chain.invoke({
      user_message: "Hello"
    });

But error happened.
AuthenticationError: 401 Incorrect API key provided: sk-no-ke******ired. You can find your API key at https://platform.openai.com/account/api-keys.