[Bug]: Internal Server Error

### Problem description

I am trying to deploy a Next.js v15 project. Once the project is deployed and I try to open the website, it shows me `Internal Server Error` and when I check the Deno Logs it shows:
```
▲ Next.js 14.2.16
- Local: http://localhost:80
- Network: http://0.0.0.0:80

✓ Starting...

Env vars cannot begin with DENO_

NotFound: No such file or directory (os error 2): readfile '/src/.next/server/font-manifest.json'
at Object.readFileSync (ext:deno_fs/30_fs.js:834:10)
at readFileSync (ext:deno_node/_fs/_fs_readFile.ts:52:21)
at loadManifest (file:///node_modules/.deno/next@14.2.16/node_modules/next/dist/server/load-manifest.js:36:52)
at requireFontManifest (file:///node_modules/.deno/next@14.2.16/node_modules/next/dist/server/require.js:117:57)
at NextNodeServer.getFontManifest (file:///node_modules/.deno/next@14.2.16/node_modules/next/dist/server/next-server.js:741:49)
at new Server (file:///node_modules/.deno/next@14.2.16/node_modules/next/dist/server/base-server.js:353:72)
at new NextNodeServer (file:///node_modules/.deno/next@14.2.16/node_modules/next/dist/server/next-server.js:146:9)
at NextServer.createServer (file:///node_modules/.deno/next@14.2.16/node_modules/next/dist/server/next.js:175:24)
at eventLoopTick (ext:core/01_core.js:175:7)
at async file:///node_modules/.deno/next@14.2.16/node_modules/next/dist/server/next.js:213:31 {
name: "NotFound",
code: "ENOENT"
}

Failed to handle request for /favicon.ico

PermissionDenied: 'Deno.exit' is not allowed in this context.
at Object.exit (ext:deno_deploy/os.js:69:9)
at Process.reallyExit (node:process:314:15)
at Process.exit (node:process:63:11)
at ServerImpl. (file:///node_modules/.deno/next@14.2.16/node_modules/next/dist/server/lib/start-server.js:276:25)
at eventLoopTick (ext:core/01_core.js:175:7) {
name: "PermissionDenied"
}
```

### Steps to reproduce

- Step 1: Create a Next.js v15 project.
- Step 2: Use `bun` as a package manager instead of deno
- Step 3: Push your project on GitHub
- Step 4: Go on Deno Deploy and deploy your project using GitHub repository
- Step 5: Visit the deployed website.

### Expected behavior

The website should load properly without any errors.

### Environment

- Bun Verson: `1.1.29`
- Next.js Version: `15.0.1`

**Note: I am using `npm` for installing and building in Deno Deploy**

### Possible solution

_No response_

### Additional context

_No response_