"InferenceUpstreamError: ERROR 3026: Unknown internal error" when calling Workers AI

const ai = new Ai(env.AI);
const prompt = [
            { role: "system", content: "Prompt" },
            { role: "user", content: "Prompt" },
            { role: "assistant", content: "Prompt" },
]
const result = await ai.run('@cf/meta/llama-2-7b-chat-int8', { messages: prompt });