No service when calling npm run start

[dancesWithCycles]

Hi folks,
Thank you so much for this repository. I checked it out and called npm i && npm run start. When I am looking at the service running on localhost:3000 I can see that the stop search is not working. The developer console is complaining like this.

...
Object { name: "FCP", value: 711, delta: 711, entries: (1) […], id: "v2-1687784584579-6170530239348" }
[web-vitals.js:1](http://localhost:3000/home/begerad/git/github/reichweitenchecker/node_modules/web-vitals/dist/web-vitals.js)
Uncaught (in promise) TypeError: NetworkError when attempting to fetch resource.
Object { name: "FID", value: 1, delta: 1, entries: (1) […], id: "v2-1687784584579-8592184415967" }
[web-vitals.js:1](http://localhost:3000/home/begerad/git/github/reichweitenchecker/node_modules/web-vitals/dist/web-vitals.js)
Object { name: "TTFB", value: 42, delta: 42, entries: (1) […], id: "v2-1687784584580-8824531779843" }
...

Do you provide the required interfaces to run an instance of this repository or tell how to run those interfaces?

Cheers!