I'm trying to use VS Code local port forwarding to forward port 3000, but when I try to access the generated URL (v0jw1fjz-3000.inc1.devtunnels.ms), I get the following error:

This page isn’t working v0jw1fjz-3000.inc1.devtunnels.ms is currently unable to handle this request. HTTP ERROR 502

What I've Tried:

• Verified my local server is running on port 3000 (npm run dev for a Next.js app).
• Restarted VS Code and my PC but the issue persists.
• Manually stopped and restarted port forwarding via the VS Code Command Palette.
• Tried a different port (3001, 8080) but got the same issue.