Run client there is a error msg:"Unhandled Rejection (TypeError): Failed to fetch"

[teedy8023mars]

35 | var nav = new mapboxgl.NavigationControl();
36 | map.addControl(nav, this.state.matches?'bottom-right':'top-right');
37 |

38 | fetch('https://covid19-api.hackbotone.com/markers.geojson')
| ^ 39 | .then(response => response.json())
40 | .then(data =>
41 | map.once('load', function () {

[teedy8023mars]

I have created my own MAPBOX_ACCESS_TOKEN,
and changed BASE_URL to http://localhost:3000
but it doesn't work, hope someone can help. thanks

[ysawyers]

Having the same issue; I need help as well thank you!