JSON Input

This post provides the solution for the error "Unexpected end of JSON input" that occurs when we run "npm run build" on React Next.

This is a proxy error. You may have problems with your ISP (Internet Service Provider) or your VPN (Virtual Private Network).

Solution

  1. Restart your modem;
  2. Turn off your VPN;

In my case, I called the ISP to reset my modem connection.

To complete, remove the folder node_modules and run "npm install".