Error: Cannot find entrypoint when deploying Elysia template

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Hello everyone, I am new here.
I wanted to test run the Elysia template on Vercel but I keep running into the issue entrypoint cannot be found. I followed everything the docs said, using an index.ts file in the src directory. I am then using a custom build script to build the project.

const result = await Bun.build({
  entrypoints: ["./src/index.ts"],
  target: "bun",
  outdir: "./dist",
  format: "esm",
  define: {
    "process.env.NODE_ENV": JSON.stringify("production"),
  },
});

When the project is about to be deployed, the error entrypoint cannot be found is shown. Please, I need help.