Panel cannot connect to API

Kirby 3 Questions 🤔
1

Hello people,

I cannot access my panel. And I get the Error like those. Sorry, I have no idea what does it mean?

Bildschirmfoto 2021-01-02 um 23.32.40
Bildschirmfoto 2021-01-02 um 23.32.402262×522 76 KB

2

What sort of local setup are you using?

3

I use Gulp for localhost. Panel works for installation and first use. But second time I ran dev. I got this error and panel is not working anymore. I am not sure which part of my local setup should I show you.

  server: {
      enable: true,
      connect: {
        // For more options, see https://github.com/micahblu/gulp-connect-php#options
        base: './src/',
        port:4000,
        //open: true,
        router: 'kirby/router.php',
      },
    },

I haven’t change anything in .htaccess.

4

If I change lockhost:4000 to 127.0.0.1:4000/panel works. Probably problem in my setting?