`Reflect.get called on non-object` error when using OpenAI library in NextJS

{
  "message": [
    "TypeError: Reflect.get called on non-object"
  ],
  "level": "error",
  "timestamp": 1695279765223
}

{
  "message": [
    "TypeError: Reflect.get called on non-object"
  ],
  "level": "error",
  "timestamp": 1695279765223
}

import { OpenAI } from "openai";

export async function POST(requestContext: Request) {
  const gptClient = new OpenAI({ apiKey: process.env.OPENAI_API_KEY });

  const requestBody = await requestContext.json();
  const gptRes = await gptClient.chat.completions.create({
    model: "gpt-4",
    messages: [{ role: "system", content: requestBody.systemPrompt }],
  });

  return new Response(JSON.stringify(gptRes), {
    headers: { "Content-Type": "application/json" },
  });
}

/// Route Segment Config
export const runtime = "edge";

import { OpenAI } from "openai";

export async function POST(requestContext: Request) {
  const gptClient = new OpenAI({ apiKey: process.env.OPENAI_API_KEY });

  const requestBody = await requestContext.json();
  const gptRes = await gptClient.chat.completions.create({
    model: "gpt-4",
    messages: [{ role: "system", content: requestBody.systemPrompt }],
  });

  return new Response(JSON.stringify(gptRes), {
    headers: { "Content-Type": "application/json" },
  });
}

/// Route Segment Config
export const runtime = "edge";