Can use react web app from another device

I'm trying to access my react app, which is running on development server on my laptop from my android phone. I'm also using https. My web server is running on my laptop and it uses self-signed certificate for SSL communication. When I try to access app from laptop it works, but accessing from phone gives error when fetching data from server (mostly invalid certificate common name). Can someone explain me what I'm doing wrong. Both, my laptop and phone are in private network.