[SOLVED]Help to "reverse_proxying" two syncthing instances

[francislavoie]

Path matching is exact in Caddy, so /debianSync will only match exactly /debianSync and not /debianSync/foo. So if you need to match any subpaths, you’ll need to add a * like this: /debianSync*

Request matchers (Caddyfile) - Caddy Documentation

That said, generally I recommend using subdomains rather than subpaths for separate apps:

The "subfolder problem", OR, "why can't I reverse proxy my app into a subfolder?"

Have you ever tried to reverse proxy an app into its own little subfolder of your domain name? Makes things neat, doesn’t it? Using example.com/foo/ for one app, example.com/bar/ for another. If you’re coming here from one of the selfhosted communities, you might be thinking along the lines of example.com/sonarr/, example.com/radarr/ etc. Chances are, you’ve tried some configuration along these lines: example.com { redir /sonarr /sonarr/ handle_path /sonarr/* { reverse_proxy localhost…