simplies way would be ngrok, after install, just type
ngrok http 5003
the output will look like
ngrok (Ctrl+C to quit)
Build better APIs with ngrok. Early access: ngrok.com/early-access
Session Status online
Account <> (Plan: Free)
Update update available (version 3.4.0, Ctrl-U to update)
Version 3.3.1
Region United States (us)
Latency -
Web Interface http://127.0.0.1:4040
Forwarding https://<some_random_id>.ngrok-free.app -> http://localhost:5003
Connections ttl opn rt1 rt5 p50 p90
0 0 0.00 0.00 0.00 0.00
and the url in manifest should be changed to the ngrok url.
In the dev tool. put https://<some_random_id>.ngrok-free.app and things should work.
Cloudflared has better dns support but the setup is more complicated and I feel for local dev ngrok just works.