explain the error "500 EOF"

2025-04-02

I'm using easymonitor.com to monitor my sites and this is a second day I'm getting this errors.
I can access my Cpanel/WHM but not the web site, I get "cannot find server" error.

Can some explain what " 500 EOF" means.

HTTP Error 500 unexpected EOF before status line seen
HTTP Error 500 EOF instead of reponse status line

Thanks.

can someone please check http://classifieds.480-602.com see if it works.