telegram bot issue wrkr not responding, no logs

import { Bot, Context, webhookCallback } from "grammy";

export interface Env {
  BOT_INFO: string;
  BOT_TOKEN: string;
}
export default {
  async fetch(
    request: Request,
    env: Env,
    ctx: ExecutionContext,
  ): Promise<Response> {
    const bot = new Bot(env.BOT_TOKEN, { botInfo: JSON.parse(env.BOT_INFO) });
    bot.command("start", async (ctx: Context) => {
      await ctx.reply("Hello, world!");
    });

    return webhookCallback(bot, "cloudflare-mod")(request);
  },
};