How to run a certificate on localhost?

Question

Node.js

Created two certificates. One added to trusted, and signed the second certificate with it, which he added to personal.
In the browsersync options, I enabled HTTPS support, and specified the paths to the files that I placed in the root directory of the project.

gulp.task("serve", function() {
  server.init({
    server: "dist/",
    notify: false,
    open: true,
    https: {
      key: "server.key",
      cert: "server.crt"
    },
    cors: true,
    ui: false
  });

In the end, nothing works anyway:

The certificates are signed, the paths are correct, what else does he need, I don’t understand

Answer 1

What hostname certificate was generated for? Those. show certificate details. Interested in common-name (CN) and subjectAltName. May be signed with sha1 (deprecated in Chrome).
In general, in Chrome> Developer Tools> Security writes why the certificate does not suit.