HTTP 408 Error - Why Does My Request Keep Timing Out? or How to Fix HTTP 408 (Request Timeout) Errors

Had this exact problem! http 408 kept popping up until I realized my antivirus was blocking requests.

Try disabling your firewall temporarily to test. Also, flush your DNS (ipconfig /flushdns in CMD).

If it’s a form submission, maybe the payload’s too big? Check dev tools for errors.